Docoh
Loading...

FCNCA First Citizens Bancshares, Inc

Document And Entity Information

Document And Entity Information - shares3 Months Ended
Mar. 31, 2021Apr. 30, 2021
Entity Central Index Key0000798941
Current Fiscal Year End Date--12-31
Document Fiscal Year Focus2021
Document Fiscal Period FocusQ1
Amendment Flagfalse
Document Type10-Q
Document Quarterly Reporttrue
Document Period End DateMar. 31,
2021
Document Transition Reportfalse
Entity File Number001-16715
Entity Registrant NameFIRST CITIZENS BANCSHARES INC /DE/
Entity Incorporation, State or Country CodeDE
Entity Tax Identification Number56-1528994
Entity Address, Address Line One4300 Six Forks Road
Entity Address, City or TownRaleigh
Entity Address, State or ProvinceNC
Entity Address, Postal Zip Code27609
City Area Code(919)
Local Phone Number716-7000
Title of 12(g) SecurityClass B Common Stock, Par Value $1
Entity Current Reporting StatusYes
Entity Interactive Data CurrentYes
Entity Filer CategoryLarge Accelerated Filer
Entity Small Businessfalse
Entity Emerging Growth Companyfalse
Entity Shell Companyfalse
Class A Common Stock
Title of 12(b) SecurityClass A Common Stock, Par Value $1
Trading SymbolFCNCA
Security Exchange NameNASDAQ
Entity Common Stock, Shares Outstanding8,811,220
Class B Common Stock
Entity Common Stock, Shares Outstanding1,005,185
Preferred Stock
Title of 12(b) SecurityDepositary Shares, Each Representing a 1/40th Interest in a Share of 5.375% Non-Cumulative Perpetual Preferred Stock, Series A
Trading SymbolFCNCP
Security Exchange NameNASDAQ

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Assets
Cash and due from banks $ 410,495 $ 362,048
Overnight investments7,588,757 4,347,336
Investment in marketable equity securities106,886 91,680
Debt Securities, Available-for-sale7,307,122 7,014,243
Investment securities held to maturity at cost2,808,099 2,816,982
Loans held for sale129,334 124,837
Loans and leases33,180,851 32,791,975
Allowance for loan and lease losses(210,651)(224,314)
Net loans and leases32,970,200 32,567,661
Premises and equipment1,238,874 1,251,283
Other real estate owned48,512 50,890
Income earned not collected148,022 145,694
Goodwill350,298 350,298
Other intangible assets51,547 50,775
Other assets750,460 783,953
Total assets53,908,606 49,957,680
Deposits [Abstract]
Noninterest-bearing deposits20,515,142 18,014,029
Interest-bearing deposits26,815,855 25,417,580
Total deposits47,330,997 43,431,609
Securities sold under customer repurchase agreements680,705 641,487
Federal Home Loan Bank borrowings648,671 655,175
Subordinated Debt497,153 504,518
Other Borrowings84,502 88,470
FDIC shared-loss payable0 15,601
Other liabilities345,178 391,552
Total liabilities49,587,206 45,728,412
Shareholders' Equity
Preferred stock339,937 339,937
Retained earnings4,005,318 3,867,252
Accumulated other comprehensive loss(33,671)12,263
Total shareholders' equity4,321,400 4,229,268
Total liabilities and shareholders' equity $ 53,908,606 $ 49,957,680
Preferred stock, shares issued345,000 345,000
Preferred stock, shares outstanding345,000 345,000
Class A Common Stock
Shareholders' Equity
Common stock $ 8,811 $ 8,811
Common stock, shares issued8,811,220 8,811,220
Common stock, shares outstanding8,811,220 8,811,220
Class B Common Stock
Shareholders' Equity
Common stock $ 1,005 $ 1,005
Common stock, shares issued1,005,185 1,005,185
Common stock, shares outstanding1,005,185 1,005,185

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Investment in marketable equity securities at cost $ 84,297 $ 84,837
Investment securities available for sale at cost7,270,552 6,911,965
Investment securities held to maturity at fair value $ 2,774,982 $ 2,838,499
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized10,000,000 10,000,000
Preferred stock, shares issued345,000 345,000
Preferred stock, shares outstanding345,000 345,000
Class A Common Stock
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized16,000,000 16,000,000
Common stock, shares issued8,811,220 8,811,220
Common stock, shares outstanding8,811,220 8,811,220
Class B Common Stock
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock, shares authorized2,000,000 2,000,000
Common stock, shares issued1,005,185 1,005,185
Common stock, shares outstanding1,005,185 1,005,185

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Interest income
Loans and leases $ 323,023 $ 325,548
Investment securities interest and dividend income30,852 39,493
Overnight investments1,448 4,518
Total interest income355,323 369,559
Interest expense
Deposits8,793 24,194
Securities sold under customer repurchase agreements338 442
Federal Home Loan Bank borrowings2,087 2,984
Subordinated debt4,188 2,755
Interest Expense, Other265 784
Total interest expense15,671 31,159
Net interest income339,652 338,400
Provision (credit) for loan and lease losses(10,974)28,355
Net interest income after provision for loan and lease losses350,626 310,045
Noninterest income
Other service charges and fees8,489 7,792
Insurance commissions16,011 (51,408)
Realized gains on investment securities available for sale, net9,207 19,795
Other1,860 625
Total noninterest income136,649 64,011
Noninterest expense
Salaries and wages147,830 145,255
Employee benefits35,725 38,511
Occupancy expense29,743 27,480
Equipment expense29,803 27,850
Processing fees paid to third parties13,673 10,372
FDIC insurance expense3,218 3,466
Collection and foreclosure-related expenses2,198 4,054
Merger-related expenses6,819 4,232
Other26,917 38,751
Total noninterest expense295,926 299,971
Income before income taxes191,349 74,085
Income taxes44,033 16,916
Net income147,316 57,169
Preferred stock dividends4,636 0
Net income available to common shareholders $ 142,680 $ 57,169
Average shares outstanding (in shares)9,816,405 10,473,119
Net income per share $ 14.53 $ 5.46
Service charges on deposit accounts
Noninterest income
Revenue from contract with customers $ 19,960 $ 18,160
Cardholder services, net
Noninterest income
Revenue from contract with customers8,917 5,888
Mortgage income
Noninterest income
Revenue from contract with customers32,198 26,412
Merchant services, net
Noninterest income
Revenue from contract with customers21,536 26,413
ATM income
Noninterest income
Revenue from contract with customers12,991 5,224
Realized gains on investment securities available for sale, net
Noninterest income
Revenue from contract with customers3,998 3,688
Gain on extinguishment of debt
Noninterest income
Revenue from contract with customers $ 1,482 $ 1,422

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income $ 147,316 $ 57,169
Unrealized (losses) gains on securities available for sale:
Unrealized (losses) gains on securities available for sale arising during the period(56,501)144,843
Tax effect12,995 (33,313)
Reclassification adjustment for realized gains on securities available for sale included in income before income taxes(9,207)(19,795)
Tax effect2,118 4,553
Total change in unrealized (losses) gains on securities available for sale, net of tax(50,595)96,288
Unrealized losses on securities available for sale transferred to held to maturity:
Reclassification adjustment for accretion of unrealized losses on securities available for sale transferred to held to maturity(475)0
Tax effect109 0
Total change in unrealized losses on securities available for sale transferred to held to maturity, net of tax(366)0
Change in pension obligation:
Amortization of actuarial losses6,529 6,264
Tax effect(1,502)(1,441)
Total change in pension obligation, net of tax5,027 4,823
Net current period other comprehensive (loss) income(45,934)101,111
Total comprehensive income $ 101,382 $ 158,280

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity - USD ($) shares in Thousands, $ in ThousandsTotalClass A Common StockClass B Common StockCommon StockClass A Common StockCommon StockClass B Common StockPreferred StockSurplusRetained EarningsRetained EarningsClass A Common StockRetained EarningsClass B Common StockAccumulated Other Comprehensive (Loss) Income
Beginning balance, shareholders' equity at Dec. 31, 2019 $ 3,586,184 $ 9,624 $ 1,005 $ 0 $ 44,081 $ 3,658,197 $ (126,723)
Beginning balance, shareholders' equity (Cumulative effect of adoption of ASC 326) at Dec. 31, 2019 $ 36,943 36,943
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]Cumulative effect of adoption of ASC 326
Net income $ 57,169 57,169
Other comprehensive income (loss), net of tax $ 101,111 101,111
Issuance of preferred stock339,958 339,958
Stock repurchased during period $ (159,700) $ (159,704)(349)(44,081)(115,274)
Cash dividends(3,739) $ (402) $ (3,739) $ (402)
Ending balance, shareholders' equity at Mar. 31, 20203,957,520 9,275 1,005 $ 339,958 0 3,632,894 (25,612)
Beginning balance, shareholders' equity at Dec. 31, 20204,229,268 8,811 1,005 339,937 0 3,867,252 12,263
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income147,316 147,316
Other comprehensive income (loss), net of tax(45,934)(45,934)
Cash dividends $ (4,142)(472) $ (4,142)(472)
Preferred stock dividends declared $ (4,636) $ (4,636)
Ending balance, shareholders' equity at Mar. 31, 2021 $ 4,321,400 $ 8,811 $ 1,005 $ 339,937 $ 0 $ 4,005,318 $ (33,671)

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Shareholders' Equity (Parenthetical) - $ / shares3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Stock repurchased during period (in shares)349,390
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share) $ 0.47 $ 0.40
Common Stock | Class A Common Stock
Stock repurchased during period (in shares)349,390

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
OPERATING ACTIVITIES
Net income $ 147,316 $ 57,169
Adjustments to reconcile net income to cash provided by operating activities:
Provision (credit) for loan and lease losses(10,974)28,355
Deferred tax expense (benefit)8,555 (11,485)
Net change in current taxes26,703 11,829
Depreciation and amortization27,864 26,879
Net (decrease) increase in accrued interest payable(4,264)(4,624)
Net increase in income earned not collected(2,328)(1,914)
Contribution to pension plans0 (100,000)
Realized gains on investment securities available for sale, net(9,207)(19,795)
Marketable equity securities (gains) losses, net(16,011)51,408
Origination of loans held for sale(315,451)(205,986)
Proceeds from Sale of Loans Held-for-sale279,180 201,886
Gain on sale of loans(9,365)(5,682)
Net (gains) losses on other real estate owned(527)1,419
Net accretion of premiums and discounts116 4,674
Amortization of intangible assets5,795 6,160
Origination of mortgage servicing rights, net of change in valuation allowance(6,567)1,384
Net change in other assets17,535 4,067
Net change in other liabilities(33,494)(28,135)
Net cash provided by operating activities104,876 17,609
INVESTING ACTIVITIES
Net increase in loans outstanding(383,507)(202,667)
Purchases of investment securities available for sale(1,737,890)(4,305,818)
Purchases of investment securities held to maturity(207,313)(724,412)
Purchases of marketable equity securities(306)(287,014)
Proceeds from maturities/calls of investment securities held to maturity206,282 14,166
Proceeds from maturities/calls of investment securities available for sale1,079,216 572,937
Proceeds from sales of investment securities available for sale351,984 3,156,988
Proceeds from sales of marketable equity securities1,111 2,438
Net (increase) decrease in overnight investments(3,241,421)454,455
Cash paid to FDIC for settlement of shared-loss agreement(16,103)(99,468)
Proceeds from sales of other real estate10,011 5,265
Proceeds from sales of premises and equipment1,143 0
Purchases of premises and equipment(23,544)(26,930)
Business acquisitions, net of cash acquired0 (1,235)
Other investing activities(8,009)0
Net cash used in investing activities(3,968,346)(1,441,295)
FINANCING ACTIVITIES
Net decrease in time deposits(159,035)(310,224)
Net increase in demand and other interest-bearing deposits4,058,956 1,017,371
Net decrease in short-term borrowings39,218 (92,871)
Repayments of Other Long-term Debt(17,973)(38,583)
Origination of long-term obligations0 745,886
Net proceeds from preferred stock issuance0 339,958
Repurchase of common stock0 (156,094)
Cash dividends paid(9,249)(4,256)
Net cash (used in) provided by financing activities3,911,917 1,501,187
Change in cash and due from banks48,447 77,501
Cash and due from banks at beginning of period362,048 376,719
Cash and due from banks at end of period410,495 454,220
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Interest19,935 35,783
Income taxes11 (592)
Transfers of loans to other real estate2,374 4,560
Dividends declared but not paid4,614 4,141
Unsettled call of investment securities3,000 0
Loans held for sale exchanged for investment securities63,526 0
Reclassification of portfolio loans to loans held for sale22,655 1,304
Transfers of premises and equipment to other real estate4,732 1,427
Premises and equipment acquired through finance leases and other financing arrangements0 1,191
Unsettled common stock repurchases $ 0 $ 3,610

Accounting Policies and Basis o

Accounting Policies and Basis of Presentation3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
Accounting Policies and Basis of PresentationACCOUNTING POLICIES AND BASIS OF PRESENTATION First Citizens BancShares, Inc. (“BancShares”) is a financial holding company organized under the laws of Delaware and conducts operations through its banking subsidiary, First-Citizens Bank & Trust Company (“FCB”), which is headquartered in Raleigh, North Carolina. General These consolidated financial statements and notes thereto are presented in accordance with instructions for Form 10-Q and Article 10 of Regulation S-X and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States of America (“GAAP”). In the opinion of management, all normal recurring adjustments necessary for a fair presentation of the consolidated financial position and consolidated results of operations have been made. The unaudited interim consolidated financial statements included in this Quarterly Report on Form 10-Q should be read in conjunction with the Consolidated Financial Statements and Notes to the Consolidated Financial Statements included in BancShares’ Annual Report on Form 10-K for the year ended December 31, 2020. Reclassifications In certain instances, amounts reported in prior periods’ consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported cash flows, shareholders’ equity or net income. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions which affect the amounts reported. Actual results could differ from those estimates. The estimates BancShares considers significant are the allowance for credit losses, “ACL”, fair value measurements, and income taxes. Share Repurchases During the first quarter of 2021, BancShares did not repurchase shares of Class A common stock . During the first quarter of 2020, BancShares purchased a total of 349,390 shares of Class A common stock for $159.7 million at an average cost per share of $457.10. During 2020, share repurchases included 45,000 shares of Class A common stock purchased from Ella Ann Holding, as trustee of her revocable trust. Mrs. Holding is the widow of BancShares’ former Executive Vice Chairman, Frank B. Holding, and the mother of Frank B. Holding, Jr. and Hope H. Bryant, BancShares’ Chairman and Chief Executive Officer and Vice Chairman, respectively. Small Business Administration Paycheck Protection Program The Small Business Administration Paycheck Protection Program (“SBA-PPP”) is one of the centerpieces of the Coronavirus Aid Relief and Economic Security Act (the “CARES Act”), which was passed on March 27, 2020 in response to the outbreak of a novel strain of coronavirus (“COVID-19”) and was supplemented with subsequent legislation. Overseen by the United States (“U.S.”) Treasury Department, the SBA-PPP offers cash-flow assistance to nonprofit and small business employers through guaranteed loans for expenses incurred between February 15, 2020, and August 8, 2020. Borrowers are eligible for forgiveness of principal and accrued interest on SBA-PPP loans to the extent that the proceeds were used to cover eligible payroll costs, interest costs, rent, and utility costs over a period of between eight and 24-weeks after the loan is made as long as the borrower retains its employees and their compensation levels. The CARES Act authorized the SBA to temporarily guarantee these loans. The SBA began processing forgiveness payments during the fourth quarter of 2020. The Consolidated Appropriations Act 2021 was signed into law during the fourth quarter of 2020 and contained provisions for a second round of funding of SBA-PPP loans. During the first quarter of 2021, BancShares originated over 9,600 SBA-PPP loans totaling over $1.1 billion. Due to the unique nature of these provisions, SBA-PPP loans have been disclosed as a separate loan class. Origination fees received from the SBA are capitalized into the carrying amount of the loans. The deferred fee income, net of origination costs, is recognized over the life of the loans as an adjustment to yield using the effective interest method. As of March 31, 2021, SBA-PPP loans outstanding were $2.8 billion. Recently Issued Accounting Pronouncements There were no Accounting Standards Updates (“ASUs”) issued during the first quarter of 2021 by the Financial Accounting Standards Board (“FASB”) that will have a material impact on BancShares’ consolidated financial statements.

Business Combinations

Business Combinations3 Months Ended
Mar. 31, 2021
Business Combinations [Abstract]
Business CombinationsBUSINESS COMBINATIONS Recently Announced Business Combinations CIT Group Inc. On October 15, 2020, BancShares and CIT Group Inc., a Delaware corporation (“CIT”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) by and among BancShares, FCB, FC Merger Subsidiary IX, Inc., a direct, wholly owned subsidiary of FCB (“Merger Sub”), and CIT, the parent company of CIT Bank, N.A., a national banking association (“CIT Bank”). Pursuant to the terms and subject to the conditions set forth in the Merger Agreement, Merger Sub will merge with and into CIT, with CIT as the surviving entity (the “First-Step Merger”), and as soon as reasonably practicable following the effective time of the First-Step Merger, CIT will merge with and into FCB, with FCB as the surviving entity (together with the First-Step Merger, the “Mergers”). The Merger Agreement further provides that immediately following the consummation of the Mergers, CIT Bank will merge with and into FCB, with FCB as the surviving bank (together with the Mergers, the “Transaction”). The Merger Agreement was unanimously approved by the Board of Directors of each of BancShares and CIT. The Transaction was approved by the North Carolina Commissioner of Banks on February 5, 2021, as well as the shareholders of both companies on February 9, 2021. The parties are continuing to work with other regulators on remaining approvals and anticipate closing in mid-2021 subject to regulatory approval and the satisfaction of customary closing conditions. Upon the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the First-Step Merger (the “Effective Time”), each share of CIT common stock, par value $0.01 per share, issued and outstanding immediately prior to the Effective Time (“CIT Common Stock”), except for certain shares of CIT Common Stock owned by CIT or BancShares, will be converted into the right to receive 0.06200 shares of BancShares Class A common stock, par value $1.00 per share. Holders of CIT Common Stock will receive cash in lieu of fractional shares. In addition, at the Effective Time, each share of Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A, par value $0.01 per share, of CIT and 5.625% Non-Cumulative Perpetual Preferred Stock, Series B, par value $0.01 per share, of CIT issued and outstanding will automatically be converted into the right to receive one share of a newly created series of preferred stock, Series B, of BancShares and one share of a newly created series of preferred stock, Series C, of BancShares, respectively. The Merger Agreement requires that, effective as of the Effective Time, the Boards of Directors of the combined company and the combined bank will consist of 14 directors, (i) 11 of whom will be members of the current Board of Directors of BancShares, and (ii) three of whom will be selected from among the current Board of Directors of CIT and will include as one of those three Ellen R. Alemany, Chairwoman and Chief Executive Officer of CIT. BancShares intends to appoint Michael A. Carpenter and Vice Admiral John R. Ryan, USN (Ret.), as the two other members from CIT’s current Board of Directors who will join the Boards of Directors of the combined company and the combined bank .

Investments

Investments3 Months Ended
Mar. 31, 2021
Investments [Abstract]
InvestmentsINVESTMENTS The amortized cost and fair value of investment securities at March 31, 2021 and December 31, 2020, were as follows: March 31, 2021 (Dollars in thousands) Amortized cost Gross Gross unrealized Fair Investment securities available for sale Government agency $ 852,305 $ 784 $ 6,403 $ 846,686 Residential mortgage-backed securities 4,736,893 47,742 26,046 4,758,589 Commercial mortgage-backed securities 1,096,259 14,619 11,891 1,098,987 Corporate bonds 585,095 18,313 548 602,860 Total investment securities available for sale $ 7,270,552 $ 81,458 $ 44,888 $ 7,307,122 Investment in marketable equity securities 84,297 22,872 283 106,886 Investment securities held to maturity Residential mortgage-backed securities 1,740,314 5,191 20,510 1,724,995 Commercial mortgage-backed securities 1,065,778 13 17,811 1,047,980 Other 2,007 — — 2,007 Total investment securities held to maturity 2,808,099 5,204 38,321 2,774,982 Total investment securities $ 10,162,948 $ 109,534 $ 83,492 $ 10,188,990 December 31, 2020 (Dollars in thousands) Amortized cost Gross Gross unrealized Fair Investment securities available for sale U.S. Treasury $ 499,832 $ 101 $ — $ 499,933 Government agency 706,241 723 5,573 701,391 Residential mortgage-backed securities 4,369,130 70,283 1,310 4,438,103 Commercial mortgage-backed securities 745,892 25,645 — 771,537 Corporate bonds 590,870 14,437 2,028 603,279 Total investment securities available for sale $ 6,911,965 $ 111,189 $ 8,911 $ 7,014,243 Investment in marketable equity securities 84,837 8,654 1,811 91,680 Investment securities held to maturity Residential mortgage-backed securities 1,877,692 17,689 — 1,895,381 Commercial mortgage-backed securities 937,034 3,884 56 940,862 Other 2,256 — — 2,256 Total investment securities held to maturity 2,816,982 21,573 56 2,838,499 Total investment securities $ 9,813,784 $ 141,416 $ 10,778 $ 9,944,422 On November 1, 2020, mortgage-backed securities with an amortized cost of $1.46 billion were transferred from investment securities available for sale to the held to maturity portfolio. At the time of transfer, the mortgage-backed securities had a fair value of $1.47 billion and a weighted average contractual maturity of 18 years. The unrealized gain on these securities at the date of transfer was $5.9 million, or $4.5 million net of tax, and was reported as a component of AOCI. This unrealized gain is accreted over the remaining expected life of the securities as an adjustment of yield. Investments in residential and commercial mortgage-backed securities represent securities issued by the Government National Mortgage Association, Federal National Mortgage Association and Federal Home Loan Mortgage Corporation. Investments in government agency securities represent securities issued by the United States Small Business Administration. Investments in corporate bonds and marketable equity securities represent positions in securities of other financial institutions. Other held to maturity investments include certificates of deposit with other financial institutions. BancShares also holds approximately 354,000 shares of Visa Class B common stock, which are not considered to have a readily determinable fair value and are recorded at $0. BancShares held FHLB stock of $40.6 million and $45.4 million and other non-marketable equity securities of $11.4 million and $11.6 million at March 31, 2021 and December 31, 2020, respectively. These securities are recorded at cost within other assets. As of March 31, 2021 and December 31, 2020, no ACL was required for available for sale and held to maturity debt securities. Accrued interest receivables for available for sale and held to maturity debt securities were excluded from the estimate for credit losses. At March 31, 2021, accrued interest receivables for available for sale and held to maturity debt securities were $21.3 million and $5.3 million, respectively. At December 31, 2020, accrued interest receivables for available for sale and held to maturity debt securities were $17.6 million and $5.4 million, respectively. During the three months ended March 31, 2021 and 2020, no accrued interest was deemed uncollectible and written off against interest income. The following table provides the amortized cost and fair value by contractual maturity for investment securities available for sale and held to maturity. Expected maturities will differ from contractual maturities on certain securities because issuers and borrowers of underlying collateral may have the right to call or prepay obligations with or without prepayment penalties. Residential and commercial mortgage-backed and government agency securities are stated separately as they are not due at a single maturity date. March 31, 2021 December 31, 2020 (Dollars in thousands) Amortized cost Fair Amortized cost Fair Investment securities available for sale Non-amortizing securities maturing in: One year or less $ 1,020 $ 1,021 $ 500,846 $ 500,954 One through five years 72,340 74,536 72,565 73,881 Five through 10 years 502,757 517,922 508,320 519,570 Over 10 years 8,978 9,381 8,971 8,807 Government agency 852,305 846,686 706,241 701,391 Residential mortgage-backed securities 4,736,893 4,758,589 4,369,130 4,438,103 Commercial mortgage-backed securities 1,096,259 1,098,987 745,892 771,537 Total investment securities available for sale $ 7,270,552 $ 7,307,122 $ 6,911,965 $ 7,014,243 Investment securities held to maturity Non-amortizing securities maturing in: One year or less 998 998 1,507 1,507 One through five years 1,009 1,009 749 749 Residential mortgage-backed securities 1,740,314 1,724,995 1,877,692 1,895,381 Commercial mortgage-backed securities 1,065,778 1,047,980 937,034 940,862 Total investment securities held to maturity $ 2,808,099 $ 2,774,982 $ 2,816,982 $ 2,838,499 The following table provides the gross realized gains and losses on the sales of investment securities available for sale for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Gross realized gains on sales of investment securities available for sale $ 9,207 $ 20,474 Gross realized losses on sales of investment securities available for sale — (679) Net realized gains on sales of investment securities available for sale $ 9,207 $ 19,795 The following table provides the realized and unrealized gains and losses on marketable equity securities for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Marketable equity securities gains (losses), net $ 16,011 $ (51,408) Less net gains recognized on marketable equity securities sold 263 323 Unrealized gains (losses) recognized on marketable equity securities held $ 15,748 $ (51,731) The following table provides information regarding securities with unrealized losses as of March 31, 2021 and December 31, 2020: March 31, 2021 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale Government agency $ 331,034 $ 3,501 $ 415,379 $ 2,902 $ 746,413 $ 6,403 Residential mortgage-backed securities 2,345,301 26,001 12,495 45 2,357,796 26,046 Commercial mortgage-backed securities 685,575 11,891 — — 685,575 11,891 Corporate bonds 8,394 14 26,183 534 34,577 548 Total $ 3,370,304 $ 41,407 $ 454,057 $ 3,481 $ 3,824,361 $ 44,888 December 31, 2020 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale Government agency $ 268,622 $ 3,197 $ 328,777 $ 2,376 $ 597,399 $ 5,573 Residential mortgage-backed securities 433,816 1,241 23,064 69 456,880 1,310 Corporate bonds 57,715 2,028 — — 57,715 2,028 Total $ 760,153 $ 6,466 $ 351,841 $ 2,445 $ 1,111,994 $ 8,911 As of March 31, 2021, there were 60 investment securities available for sale with continuous losses for more than 12 months, of which 54 were government sponsored enterprise-issued mortgage-backed securities or government agency securities and six were corporate bonds. None of the unrealized losses identified as of March 31, 2021, or December 31, 2020, relate to the issuer’s ability to honor redemption obligations. Rather, the unrealized losses relate to changes in interest rates relative to when the investment securities were purchased, and do not indicate credit-related impairment. BancShares considered other factors including changes in credit ratings, delinquencies, and other macroeconomic factors in this determination. As a result, none of the securities were deemed to require an allowance for credit losses. BancShares has the ability and intent to retain these securities for a period of time sufficient to recover all unrealized losses. Investment securities having an aggregate carrying value of $4.8 billion at March 31, 2021, and $4.6 billion at December 31, 2020, were pledged as collateral to secure public funds on deposit and certain short-term borrowings, and for other purposes as required by law. BancShares’ portfolio of held to maturity debt securities consists of mortgage-backed securities issued by government agencies and government sponsored entities. Given the consistently strong credit rating of the U.S. Treasury and the long history of no credit losses on debt securities issued by government agencies and government sponsored entities, no further credit monitoring is performed on these portfolios. Should there be downgrades to the credit rating of the U.S. Treasury or losses reported on securities issued by government agencies and government sponsored entities, BancShares will reevaluate its determination of zero expected credit losses on held to maturity debt securities. There were no debt securities held to maturity on nonaccrual status as of March 31, 2021. A security is considered past due once it is 30 days contractually past due under the terms of the agreement. There were no securities past due as of March 31, 2021.

Loans and Leases

Loans and Leases3 Months Ended
Mar. 31, 2021
Loans and Leases Receivable Disclosure [Abstract]
Loans and LeasesLOANS AND LEASES BancShares’ accounting methods for loans and leases depends on whether they are originated or purchased, and if purchased, whether or not the loans reflect more than insignificant credit deterioration since origination, which is determined as of the acquisition date. Non purchased credit deteriorated (“PCD”) loans consist of loans originated by BancShares and loans purchased from other institutions, that do not reflect more than insignificant credit deterioration at acquisition. Purchased loans which reflect more than insignificant credit deterioration are classified as PCD and reported as a single loan segment or class. At the date of acquisition, all acquired loans are recorded at fair value. Loans and leases outstanding included the following at March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Commercial: Construction and land development $ 1,022,087 $ 985,424 Owner occupied commercial mortgage 11,340,966 11,165,012 Non-owner occupied commercial mortgage 3,017,898 2,987,689 Commercial and industrial and leases 4,946,445 5,013,644 SBA-PPP 2,769,906 2,406,291 Total commercial loans 23,097,302 22,558,060 Consumer: Residential mortgage 5,566,026 5,561,686 Revolving mortgage 1,938,422 2,052,854 Construction and land development 336,065 348,123 Consumer auto 1,271,586 1,255,402 Consumer other 538,677 552,968 Total consumer loans 9,650,776 9,771,033 PCD loans 432,773 462,882 Total loans and leases $ 33,180,851 $ 32,791,975 At March 31, 2021 and December 31, 2020, accrued interest receivable on loans was $103.2 million and $107.7 million, respectively, and was excluded from the estimate of credit losses. Certain residential real estate loans are originated to be sold to investors and are recorded in loans held for sale at fair value. In addition, BancShares may change its strategy for certain portfolio loans and decide to sell them in the secondary market. At that time, portfolio loans are transferred to loans held for sale at fair value. Loans held for sale totaled $129.3 million and $124.8 million at March 31, 2021 and December 31, 2020, respectively. The following table presents selected components of the amortized cost of loans. (Dollars in thousands) March 31, 2021 December 31, 2020 Deferred fees, including unearned fees and unamortized costs on non-PCD loans Net deferred fees related to SBA-PPP loans $ 66,717 $ 41,064 Net deferred fees related to other portfolios 11,932 9,153 Total net deferred fees $ 78,649 $ 50,217 Net unamortized discount on purchased loans Non-PCD $ 17,009 $ 19,473 PCD 41,141 45,254 Total $ 58,150 $ 64,727 The aging of the outstanding loans and leases, by class, at March 31, 2021 and December 31, 2020 is provided in the tables below. Loans and leases past due less than 30 days are considered current as various grace periods allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement. March 31, 2021 (Dollars in thousands) 30-59 days 60-89 days 90 days or greater Total past Current Total loans Commercial: Construction and land development $ 277 $ — $ 1,595 $ 1,872 $ 1,020,215 $ 1,022,087 Owner occupied commercial mortgage 13,153 2,996 11,028 27,177 11,313,789 11,340,966 Non-owner occupied commercial mortgage 5,046 303 8,917 14,266 3,003,632 3,017,898 Commercial and industrial and leases 13,284 4,771 3,249 21,304 4,925,141 4,946,445 SBA-PPP — — — — 2,769,906 2,769,906 Total commercial loans 31,760 8,070 24,789 64,619 23,032,683 23,097,302 Consumer: Residential mortgage 34,350 7,396 30,789 72,535 5,493,491 5,566,026 Revolving mortgage 6,222 1,603 8,531 16,356 1,922,066 1,938,422 Construction and land development 266 944 652 1,862 334,203 336,065 Consumer auto 4,432 1,014 860 6,306 1,265,280 1,271,586 Consumer other 2,246 1,213 1,516 4,975 533,702 538,677 Total consumer loans 47,516 12,170 42,348 102,034 9,548,742 9,650,776 PCD loans 11,250 4,322 33,694 49,266 383,507 432,773 Total loans and leases $ 90,526 $ 24,562 $ 100,831 $ 215,919 $ 32,964,932 $ 33,180,851 December 31, 2020 (Dollars in thousands) 30-59 days 60-89 days 90 days or greater Total past Current Total loans Commercial: Construction and land development $ 956 $ 527 $ 1,603 $ 3,086 $ 982,338 $ 985,424 Owner occupied commercial mortgage 8,757 2,232 14,082 25,071 11,139,941 11,165,012 Non-owner occupied commercial mortgage 12,370 — 5,973 18,343 2,969,346 2,987,689 Commercial and industrial and leases 14,532 2,842 3,243 20,617 4,993,027 5,013,644 SBA-PPP — — — — 2,406,291 2,406,291 Total commercial loans 36,615 5,601 24,901 67,117 22,490,943 22,558,060 Consumer: Residential mortgage 43,218 8,364 31,690 83,272 5,478,414 5,561,686 Revolving mortgage 11,977 2,626 7,415 22,018 2,030,836 2,052,854 Construction and land development 932 77 330 1,339 346,784 348,123 Consumer auto 6,825 1,835 1,076 9,736 1,245,666 1,255,402 Consumer other 3,610 1,464 1,505 6,579 546,389 552,968 Total consumer loans 66,562 14,366 42,016 122,944 9,648,089 9,771,033 PCD loans 18,322 6,076 31,026 55,424 407,458 462,882 Total loans and leases $ 121,499 $ 26,043 $ 97,943 $ 245,485 $ 32,546,490 $ 32,791,975 The amortized cost, by class, of loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at March 31, 2021 and December 31, 2020, were as follows: March 31, 2021 December 31, 2020 (Dollars in thousands) Nonaccrual Loans and Nonaccrual Loans and Commercial: Construction and land development $ 1,648 $ — $ 1,661 $ — Owner occupied commercial mortgage 22,796 1,400 23,103 3,625 Non-owner occupied commercial mortgage 10,939 2,211 7,932 147 Commercial and industrial and leases 15,718 607 10,626 540 Total commercial loans 51,101 4,218 43,322 4,312 Consumer: Residential mortgage 61,907 29 66,345 — Revolving mortgage 23,952 — 22,236 — Construction and land development 566 543 652 — Consumer auto 3,027 — 3,166 — Consumer other 816 1,155 823 1,195 Total consumer loans 90,268 1,727 93,222 1,195 PCD loans 53,165 1,432 54,939 355 Total loans and leases $ 194,534 $ 7,377 $ 191,483 $ 5,862 Credit Quality Loans and leases are monitored for credit quality on a recurring basis. Commercial and consumer loans and leases have different credit quality indicators as a result of the unique characteristics of the loan segments being evaluated. The credit quality indicators for commercial loans and leases are borrower risk classifications developed through a review of individual borrowers on an ongoing basis. Commercial loans are evaluated at least annually, with more frequent evaluations done on criticized loans. Commercial loans are also updated if there is evidence of potential credit deterioration, such as delinquency. Commercial credit cards are included in the Commercial and industrial and leases segment, but are evaluated based primarily upon delinquency status. The risk classifications as of the date presented are based on the most recent assessment performed and are defined below: Pass – A pass rated asset is not adversely classified because it does not display any of the characteristics for adverse classification. Special mention – A special mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, such potential weaknesses may result in deterioration of the repayment prospects or collateral position at some future date. Special mention assets are not adversely classified and do not warrant adverse classification. Substandard – A substandard asset is inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged, if any. Assets classified as substandard generally have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. These assets are characterized by the distinct possibility of loss if the deficiencies are not corrected. Doubtful – An asset classified as doubtful has all the weaknesses inherent in an asset classified substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently existing facts, conditions and values. Loss – Assets classified as loss are considered uncollectible and of such little value that it is inappropriate to be carried as an asset. This classification is not necessarily equivalent to any potential for recovery or salvage value, but rather that it is not appropriate to defer a full charge-off even though partial recovery may be affected in the future. Ungraded – Ungraded loans represent loans that are not included in the individual credit grading process due to their relatively small balances or borrower type. The majority of ungraded loans at March 31, 2021 relate to business credit cards. Business credit card loans are subject to automatic charge-off when they become 120 days past due in the same manner as unsecured consumer lines of credit. The remaining balance is comprised of a small amount of commercial mortgage, lease financing and other commercial real estate loans. The credit quality indicators for consumer and PCD loans are based on delinquency status of the borrower as of the date presented. As the borrower becomes more delinquent, the likelihood of loss increases. The following tables represent current credit quality indicators by origination year as of March 31, 2021. March 31, 2021 Commercial Loans Amortized Cost Basis by Origination Year Classification: 2021 2020 2019 2018 2017 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Construction and land development Pass $ 46,039 $ 399,172 $ 310,753 $ 168,534 $ 48,089 $ 28,797 $ 12,548 $ — $ 1,013,932 Special Mention — 232 — 181 85 — 145 — 643 Substandard — 225 590 1,447 5,170 80 — — 7,512 Total 46,039 399,629 311,343 170,162 53,344 28,877 12,693 — 1,022,087 Owner occupied commercial mortgage Pass 632,239 3,202,842 2,166,465 1,521,886 1,206,771 2,249,426 106,579 101 11,086,309 Special Mention 687 10,398 29,975 39,868 12,074 37,441 2,974 72 133,489 Substandard 3,564 9,322 14,441 9,287 26,702 49,856 7,996 — 121,168 Total 636,490 3,222,562 2,210,881 1,571,041 1,245,547 2,336,723 117,549 173 11,340,966 Non-owner occupied commercial mortgage Pass 158,815 809,647 603,274 332,010 319,514 638,882 35,835 — 2,897,977 Special Mention 794 676 880 10,778 1,440 2,918 500 — 17,986 Substandard 75 12,018 22,293 12,643 8,762 44,396 1,748 — 101,935 Total 159,684 822,341 626,447 355,431 329,716 686,196 38,083 — 3,017,898 Commercial and industrial and leases Pass 424,035 1,423,941 884,987 442,129 251,356 445,265 874,664 5,150 4,751,527 Special Mention 102 10,601 22,183 8,335 6,160 7,764 11,376 194 66,715 Substandard 5,507 15,179 4,398 5,572 3,950 5,597 24,608 1,410 66,221 Doubtful — — — — — — 2 — 2 Ungraded — — — — — — 61,980 — 61,980 Total 429,644 1,449,721 911,568 456,036 261,466 458,626 972,630 6,754 4,946,445 SBA-PPP Pass 936,012 1,833,894 — — — — — — 2,769,906 Total commercial $ 2,207,869 $ 7,728,147 $ 4,060,239 $ 2,552,670 $ 1,890,073 $ 3,510,422 $ 1,140,955 $ 6,927 $ 23,097,302 Consumer and PCD Loans Amortized Cost Basis by Origination Year Days Past Due: 2021 2020 2019 2018 2017 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Residential mortgage Current $ 521,849 $ 1,810,979 $ 889,902 $ 561,267 $ 518,205 $ 1,166,958 $ 24,331 $ — $ 5,493,491 30-59 days 2,367 2,193 236 9,619 4,113 15,567 255 — 34,350 60-89 days — 256 1,012 1,040 558 4,530 — — 7,396 90 days or greater — 286 1,455 838 3,797 24,384 29 — 30,789 Total 524,216 1,813,714 892,605 572,764 526,673 1,211,439 24,615 — 5,566,026 Revolving mortgage Current — — — — — — 1,772,173 149,893 1,922,066 30-59 days — — — — — — 3,877 2,345 6,222 60-89 days — — — — — — 699 904 1,603 90 days or greater — — — — — — 4,112 4,419 8,531 Total — — — — — — 1,780,861 157,561 1,938,422 Construction and land development Current 40,360 209,701 52,406 16,883 8,037 5,241 1,575 — 334,203 30-59 days — 108 15 61 30 52 — — 266 60-89 days — 240 138 59 366 141 — — 944 90 days or greater — 543 — — 59 50 — — 652 Total 40,360 210,592 52,559 17,003 8,492 5,484 1,575 — 336,065 Consumer auto Current 155,101 484,026 302,622 191,055 87,139 45,337 — — 1,265,280 30-59 days — 1,327 962 1,054 703 386 — — 4,432 60-89 days — 433 197 253 117 14 — — 1,014 90 days or greater — 294 134 217 129 86 — — 860 Total 155,101 486,080 303,915 192,579 88,088 45,823 — — 1,271,586 Consumer other Current 20,879 45,239 22,631 8,552 6,246 34,873 395,282 — 533,702 30-59 days 3 131 100 106 1 — 1,905 — 2,246 60-89 days — 95 7 10 — — 1,101 — 1,213 90 days or greater — 14 114 6 — — 1,382 — 1,516 Total 20,882 45,479 22,852 8,674 6,247 34,873 399,670 — 538,677 Total consumer $ 740,559 $ 2,555,865 $ 1,271,931 $ 791,020 $ 629,500 $ 1,297,619 $ 2,206,721 $ 157,561 $ 9,650,776 PCD loans Current $ — $ 28,056 $ 24,347 $ 26,763 $ 24,879 $ 247,606 $ 11,788 $ 20,068 $ 383,507 30-59 days — 344 390 407 300 9,423 19 367 11,250 60-89 days — 51 88 — 165 3,896 — 122 4,322 90 days or greater — 1,294 2,404 4,412 1,826 22,504 105 1,149 33,694 Total PCD $ — $ 29,745 $ 27,229 $ 31,582 $ 27,170 $ 283,429 $ 11,912 $ 21,706 $ 432,773 Total loans and leases $ 2,948,428 $ 10,313,757 $ 5,359,399 $ 3,375,272 $ 2,546,743 $ 5,091,470 $ 3,359,588 $ 186,194 $ 33,180,851 The following tables represent current credit quality indicators by origination year as of December 31, 2020. December 31, 2020 Commercial Loans Amortized Cost Basis by Origination Year Classification: 2020 2019 2018 2017 2016 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Construction and land development Pass $ 342,183 $ 341,233 $ 190,429 $ 50,776 $ 23,969 $ 11,306 $ 10,969 $ — $ 970,865 Special Mention 246 — 6,421 5,342 — — 153 — 12,162 Substandard 229 629 1,450 — 8 81 — — 2,397 Total 342,658 341,862 198,300 56,118 23,977 11,387 11,122 — 985,424 Owner occupied commercial mortgage Pass 3,183,467 2,201,165 1,625,141 1,301,412 1,049,858 1,454,020 101,556 133 10,916,752 Special Mention 6,274 20,702 36,739 12,387 17,699 25,693 5,115 72 124,681 Substandard 10,280 19,052 9,842 20,928 13,736 41,303 8,438 — 123,579 Total 3,200,021 2,240,919 1,671,722 1,334,727 1,081,293 1,521,016 115,109 205 11,165,012 Non-owner occupied commercial mortgage Pass 865,514 609,975 378,136 331,800 282,810 391,517 32,149 — 2,891,901 Special Mention 569 905 10,794 1,808 5,121 3,279 483 — 22,959 Substandard 2,899 18,546 12,296 8,764 14,087 15,427 810 — 72,829 Total 868,982 629,426 401,226 342,372 302,018 410,223 33,442 — 2,987,689 Commercial and industrial and leases Pass 1,620,622 983,852 504,463 310,468 234,735 286,996 899,978 5,520 4,846,634 Special Mention 3,146 17,065 7,265 5,393 3,307 4,912 9,152 189 50,429 Substandard 17,811 4,095 4,370 4,257 2,548 3,801 22,384 983 60,249 Ungraded — — — — — — 56,332 — 56,332 Total 1,641,579 1,005,012 516,098 320,118 240,590 295,709 987,846 6,692 5,013,644 SBA-PPP Pass 2,406,291 — — — — — — — 2,406,291 Total commercial $ 8,459,531 $ 4,217,219 $ 2,787,346 $ 2,053,335 $ 1,647,878 $ 2,238,335 $ 1,147,519 $ 6,897 $ 22,558,060 Consumer and PCD Loans Amortized Cost Basis by Origination Year Days Past Due: 2020 2019 2018 2017 2016 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Residential mortgage Current $ 1,882,683 $ 978,298 $ 655,798 $ 596,309 $ 461,719 $ 878,634 $ 24,973 $ — $ 5,478,414 30-59 days 2,278 4,573 11,463 3,772 8,613 12,299 220 — 43,218 60-89 days 30 100 1,246 1,449 834 4,705 — — 8,364 90 days or greater 282 4,831 3,150 4,015 5,689 13,723 — — 31,690 Total 1,885,273 987,802 671,657 605,545 476,855 909,361 25,193 — 5,561,686 Revolving mortgage Current — — — — — — 1,879,968 150,868 2,030,836 30-59 days — — — — — — 8,241 3,736 11,977 60-89 days — — — — — — 527 2,099 2,626 90 days or greater — — — — — — 2,301 5,114 7,415 Total — — — — — — 1,891,037 161,817 2,052,854 Construction and land development Current 215,112 85,707 24,860 10,269 6,093 2,218 2,525 — 346,784 30-59 days — 420 121 370 — 21 — — 932 60-89 days — — — 9 — 68 — — 77 90 days or greater — — — — — 330 — — 330 Total 215,112 86,127 24,981 10,648 6,093 2,637 2,525 — 348,123 Consumer auto Current 521,719 340,594 219,597 104,280 49,872 9,604 — — 1,245,666 30-59 days 2,175 1,873 1,257 842 544 134 — — 6,825 60-89 days 329 689 312 351 109 45 — — 1,835 90 days or greater 170 527 217 57 102 3 — — 1,076 Total 524,393 343,683 221,383 105,530 50,627 9,786 — — 1,255,402 Consumer other Current 53,842 27,117 10,911 7,159 2,980 29,336 415,044 — 546,389 30-59 days 322 114 77 18 11 7 3,061 — 3,610 60-89 days 102 20 13 18 3 23 1,285 — 1,464 90 days or greater 53 84 8 — — — 1,360 — 1,505 Total 54,319 27,335 11,009 7,195 2,994 29,366 420,750 — 552,968 Total consumer $ 2,679,097 $ 1,444,947 $ 929,030 $ 728,918 $ 536,569 $ 951,150 $ 2,339,505 $ 161,817 $ 9,771,033 PCD loans Current $ 31,475 $ 25,425 $ 27,183 $ 27,955 $ 28,995 $ 232,186 $ 13,212 $ 21,027 $ 407,458 30-59 days 999 925 801 718 1,341 12,637 156 745 18,322 60-89 days 447 81 312 695 97 4,098 9 337 6,076 90 days or greater 721 2,325 4,755 1,208 897 19,963 111 1,046 31,026 Total PCD $ 33,642 $ 28,756 $ 33,051 $ 30,576 $ 31,330 $ 268,884 $ 13,488 $ 23,155 $ 462,882 Total loans and leases $ 11,172,270 $ 5,690,922 $ 3,749,427 $ 2,812,829 $ 2,215,777 $ 3,458,369 $ 3,500,512 $ 191,869 $ 32,791,975 The following table provides information regarding loans pledged as collateral for borrowing capacity through the FHLB of Atlanta and the Federal Reserve Bank (“FRB”) as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 FHLB of Atlanta Lendable collateral value of pledged non-PCD loans $ 8,847,178 $ 8,637,844 Less: Advances 648,671 652,675 Available borrowing capacity $ 8,198,507 $ 7,985,169 Pledged non-PCD loans $ 12,327,626 $ 12,157,153 FRB Lendable collateral value of pledged non-PCD loans $ 3,367,466 $ 3,321,762 Less: Advances — — Available borrowing capacity $ 3,367,466 $ 3,321,762 Pledged non-PCD loans $ 4,181,520 $ 4,104,866

Allowance for Credit Losses

Allowance for Credit Losses3 Months Ended
Mar. 31, 2021
Receivables [Abstract]
AllowanceALLOWANCE FOR CREDIT LOSSES The ACL is calculated using a variety of factors, including, but not limited to, charge-off and recovery activity, loan growth, changes in macroeconomic factors, collateral type, estimated loan life and changes in credit quality. For the period ended March 31, 2021, the primary reason for the ACL change since December 31, 2020 was improvement in macroeconomic factors. Forecasted economic conditions are developed using third party macroeconomic scenarios adjusted based on management’s expectations over a forecast period of two years. For most pools, we use a 12-month straight-line reversion period to historical averages for model inputs; however for the consumer other, consumer card and commercial card pools, immediate reversion to historical net loss rates is utilized. Significant macroeconomic factors used in estimating the expected losses include unemployment, gross domestic product, home price index and commercial real estate index. Our ACL forecast considers a range of economic scenarios from an upside scenario to a severely adverse scenario, but the March 31, 2021 ACL forecast was calculated using the consensus baseline scenario. This scenario showed improvements in the most significant economic factors compared to what was used to generate the December 31, 2020 ACL. These loss estimates were also influenced by our strong credit quality, low net charge-offs and recent credit trends, which remained stable through the quarter ended March 31, 2021, despite potential impacts from COVID-19. Activity in the ACL by portfolio segment is summarized as follows: Three months ended March 31, 2021 (Dollars in thousands) Commercial Consumer PCD Total Balance at January 1 $ 80,842 $ 119,485 $ 23,987 $ 224,314 Provision (credit) (3,922) (5,504) (1,548) (10,974) Charge-offs (3,331) (4,469) (763) (8,563) Recoveries 1,275 3,340 1,259 5,874 Balance at March 31 $ 74,864 $ 112,852 $ 22,935 $ 210,651 Three months ended March 31, 2020 (Dollars in thousands) Commercial Consumer PCD Total Balance at December 31 $ 142,369 $ 75,236 $ 7,536 $ 225,141 Adoption of ASC 326 (87,554) 30,629 19,001 (37,924) Balance at January 1 54,815 105,865 26,537 187,217 Provision (credit) 21,537 9,406 (2,588) 28,355 Initial allowance on PCD loans — — 1,193 1,193 Charge-offs (5,369) (7,769) (1,123) (14,261) Recoveries 1,427 2,431 2,897 6,755 Balance at March 31 $ 72,410 $ 109,933 $ 26,916 $ 209,259 BancShares records an allowance for credit losses on unfunded commitments within other liabilities. Activity in the allowance for credit losses for unfunded commitments is summarized as follows: Three months ended March 31 (Dollars in thousands) 2021 2020 Allowance for credit losses: Beginning balance $ 12,814 $ 1,055 Adoption of ASC 326 — 8,885 Adjusted beginning balance $ 12,814 $ 9,940 Provision (credit) (1,243) 572 Ending balance 11,571 10,512 BancShares individually reviews loans greater than $500 thousand that are determined to be collateral-dependent. These collateral-dependent loans are evaluated based on the fair value of the underlying collateral as repayment of the loan is expected to be made through the operation or sale of the collateral. Commercial and industrial loans and leases are collateralized by business assets, while the remaining loan classes are collateralized by real property. The following table presents information on collateral-dependent loans by class and includes the amortized cost of collateral-dependent loans and leases, the net realizable value of the collateral, the extent to which collateral secures collateral-dependent loans and the associated ACL as of March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 (Dollars in thousands) Collateral-Dependant Loans Net Realizable Value of Collateral Collateral Coverage Allowance for Credit Losses Commercial loans: Construction and land development $ 1,424 $ 1,795 126.1 % $ — Owner occupied commercial mortgage 11,886 16,417 138.1 — Non-owner occupied commercial mortgage 6,951 9,312 134.0 — Commercial and industrial and leases 1,256 2,916 232.2 — Total commercial loans 21,517 30,440 141.5 — Consumer: Residential mortgage 21,303 27,279 128.1 120 Revolving mortgage 1,385 1,724 124.5 — Total consumer loans 22,688 29,003 127.8 120 PCD loans 20,361 35,016 172.0 — Total collateral-dependent loans $ 64,566 $ 94,459 146.3 % $ 120 December 31, 2020 (Dollars in thousands) Collateral-Dependant Loans Net Realizable Value of Collateral Collateral Coverage Allowance for Credit Losses Commercial loans: Construction and land development $ 1,424 $ 1,795 126.1 % $ — Owner occupied commercial mortgage 9,792 14,253 145.6 — Non-owner occupied commercial mortgage 5,556 7,577 136.4 — Total commercial loans 16,772 23,625 140.9 — Consumer: Residential mortgage 23,011 29,775 129.4 131 PCD loans 19,042 27,872 146.4 — Total collateral-dependent loans $ 58,825 $ 81,272 138.2 % $ 131 Collateral-dependent nonaccrual loans with no recorded allowance totaled $61.7 million and $57.5 million as of March 31, 2021 and December 31, 2020, respectively. All other nonaccrual loans have a recorded allowance. Troubled Debt Restructurings BancShares accounts for certain loan modifications or restructurings as troubled debt restructurings (“TDRs”). In general, the modification or restructuring of a loan is considered a TDR if, for economic or legal reasons related to a borrower’s financial difficulties, a concession is granted to the borrower that creditors would not otherwise consider. Concessions may relate to the contractual interest rate, maturity date, payment structure or other actions. Within BancShares’ ACL loss models, TDRs are not individually evaluated unless determined to be collateral-dependent. Consumer TDRs are included in the definition of default which provides for a 100% probability of default applied within the models. As a result, subsequent changes in credit quality metrics do not impact the calculation of the ACL on consumer TDRs. For commercial TDRs, the TDR distinction does impact the calculation of ACL, as the standard definition of default is utilized. The Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus was published by banking regulators in April 2020 to clarify expectations around loan modifications and the determination of TDRs for borrowers experiencing financial difficulty due to COVID-19. BancShares applied this regulatory guidance during its TDR identification process for short-term loan forbearance agreements as a result of COVID-19 and in most cases did not record these as TDRs. The following tables provides a summary of total TDRs by accrual status: March 31, 2021 December 31, 2020 (Dollars in thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial loans: Construction and land development $ 529 $ 41 $ 570 $ 578 $ 54 $ 632 Owner occupied commercial mortgage 38,969 9,986 48,955 37,574 10,889 48,463 Non-owner occupied commercial mortgage 20,541 1,335 21,876 18,336 1,649 19,985 Commercial and industrial and leases 30,956 6,551 37,507 29,131 3,528 32,659 Total commercial loans 90,995 17,913 108,908 85,619 16,120 101,739 Consumer: Residential mortgage 25,323 20,802 46,125 29,458 19,380 48,838 Revolving mortgage 18,729 7,331 26,060 20,124 7,128 27,252 Construction and land development 1,501 9 1,510 1,573 9 1,582 Consumer auto 2,173 668 2,841 2,018 696 2,714 Consumer other 910 163 1,073 955 137 1,092 Total consumer loans 48,636 28,973 77,609 54,128 27,350 81,478 PCD loans 20,920 9,509 30,429 17,617 7,346 24,963 Total loans $ 160,551 $ 56,395 $ 216,946 $ 157,364 $ 50,816 $ 208,180 The following table provides the types of modifications designated as TDRs during the three months ended March 31, 2021 and March 31, 2020, as well as a summary of loans modified as a TDR during the twelve-month periods ended March 31, 2021 and March 31, 2020 that subsequently defaulted during the three months ended March 31, 2021 and March 31, 2020. BancShares defines payment default as movement of the TDR to nonaccrual status, which is generally 90 days past due for TDRs, foreclosure or charge-off, whichever occurs first. Three months ended March 31, 2021 Three months ended March 31, 2020 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Loans and leases Interest only 6 $ 6,947 2 $ 42 10 $ 3,986 — $ — Loan term extension 25 3,863 12 1,749 6 794 3 263 Below market interest rate 53 8,122 20 1,428 88 8,165 29 1,421 Discharged from bankruptcy 45 4,100 12 2,365 68 5,032 28 1,767 Total restructurings 129 $ 23,032 46 $ 5,584 172 $ 17,977 60 $ 3,451 For the three months ended March 31, 2021 and March 31, 2020, the pre-modification and post-modification outstanding amortized cost of loans modified as TDRs were not materially different.

Other Real Estate Owned

Other Real Estate Owned3 Months Ended
Mar. 31, 2021
Other Real Estate [Abstract]
Other Real Estate OwnedNOTE F - OTHER REAL ESTATE OWNED The following table explains changes in other real estate owned (“OREO”) during the three months ended March 31, 2021 and 2020: (Dollars in thousands) OREO Balance at December 31, 2020 $ 50,890 Additions 7,106 Sales (8,102) Write-downs/losses (1,382) Balance at March 31, 2021 $ 48,512 Balance at December 31, 2019 $ 46,591 Additions 5,987 Acquired in business combinations 9,813 Sales (5,321) Write-downs/losses (1,363) Balance at March 31, 2020 $ 55,707

Mortgage Servicing Rights

Mortgage Servicing Rights3 Months Ended
Mar. 31, 2021
Mortgage Servicing Rights [Abstract]
Mortgage Servicing RightsMORTGAGE SERVICING RIGHTS BancShares originates certain residential mortgages loans to sell in the secondary market. BancShares’ portfolio of residential mortgage loans serviced for third parties was $3.3 billion as of March 31, 2021 and December 31, 2020. These loans are originated and sold to third parties on a non-recourse basis with servicing rights retained. The retained servicing rights are recorded as a servicing asset and are reported in other intangible assets. The associated amortization expense and any valuation allowance recognized were included as a reduction of mortgage income. Mortgage servicing rights are initially recorded at fair value and then carried at the lower of amortized cost or fair value. Contractually specified mortgage servicing fees, late fees and ancillary fees earned were $2.1 million for the three months ended March 31, 2021 and 2020, and are reported in mortgage income. The following table presents changes in the servicing asset during the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 18,426 $ 22,963 Servicing rights originated 3,444 1,583 Amortization (2,248) (1,823) Valuation allowance decrease (increase) 3,123 (2,967) Ending balance $ 22,745 $ 19,756 The following table presents the activity in the servicing asset valuation allowance for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 4,365 $ 222 Valuation allowance (decrease) increase (3,123) 2,967 Ending balance $ 1,242 $ 3,189 Mortgage servicing rights valuations are performed using a pooling methodology where loans with similar risk characteristics are grouped together and evaluated using discounted cash flows to estimate the present value of future earnings. Key economic assumptions used to value mortgage servicing rights were as follows: March 31, 2021 December 31, 2020 Discount rate - conventional fixed loans 8.74 % 7.92 % Discount rate - all loans excluding conventional fixed loans 9.74 % 8.92 % Weighted average constant prepayment rate 16.54 % 20.62 % Weighted average cost to service a loan $ 87.58 $ 87.58 The fair value of mortgage servicing rights is sensitive to changes in assumptions and is determined by estimating the present value of the asset’s future cash flows by utilizing discount rates, prepayment rates, and other inputs. The discount rate is based on the 10-year U.S. Treasury rate plus a risk premium of 700 basis points for conventional fixed loans and 800 basis points for all other loans. The prepayment rate is derived from the Public Securities Association Standard Prepayment model. Generally, as interest rates decline, mortgage loan prepayments accelerate due to increased refinance activity, which results in a decrease in the fair value and may result in the recognition of a valuation allowance. The average cost to service a loan is based on the number of loans serviced and the total cost to service the loans.

Repurchase Agreements

Repurchase Agreements3 Months Ended
Mar. 31, 2021
Repurchase Agreements [Abstract]
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]REPURCHASE AGREEMENTS BancShares utilizes securities sold under agreements to repurchase to facilitate the needs of customers and secure wholesale funding needs. Repurchase agreements are transactions whereby BancShares offers to sell to a counterparty an undivided interest in an eligible security at an agreed upon price, and which obligates BancShares to repurchase the security at an agreed upon date, repurchase price, and interest rate. These agreements are recorded at the amount of cash received in connection with the transaction and are reflected as securities sold under customer repurchase agreements. BancShares monitors collateral levels on a continuous basis and maintains records of each transaction specifically describing the applicable security and the counterparty’s interest in that security, and segregates the security from general assets in accordance with regulations governing custodial holdings of securities. The primary risk with repurchase agreements is market risk associated with the investments securing the transactions, as additional collateral may be required based on fair value changes of the underlying investments. Securities pledged as collateral under repurchase agreements are maintained with safekeeping agents. The carrying value of investment securities pledged as collateral under repurchase agreements was $685.6 million and $689.3 million at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021, BancShares held $680.7 million of securities sold under agreements to repurchase, with overnight and continuous remaining contractual maturities, made up of $485.8 million collateralized by government agency securities and $194.9 million collateralized by commercial mortgage-backed securities. At December 31, 2020, BancShares held securities sold under agreements to repurchase of $641.5 million, with overnight and continuous remaining contractual maturities, made up of $432.8 million collateralized by government agency securities and $208.7 million collateralized by commercial mortgage-backed securities.

FDIC Shared-Loss Payable

FDIC Shared-Loss Payable3 Months Ended
Mar. 31, 2021
FDIC Shared-Loss Receivable [Abstract]
FDIC Shared-Loss ReceivableFDIC SHARED-LOSS PAYABLE For certain FDIC-assisted transactions, the shared-loss agreement included a provision related to a payment owed to the FDIC at the termination of the agreement. As of March 31, 2021, these agreements have been satisfied following a $16.1 million payment made to the FDIC related to the final active agreement. The following table provides changes in the FDIC shared-loss payable since December 31, 2020: (Dollars in thousands) Total Balance at December 31, 2020 $ 15,601 Accretion 502 Payment made to the FDIC to settle shared-loss agreement (16,103) Balance at March 31, 2021 $ —

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)3 Months Ended
Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive LossACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME Accumulated other comprehensive (loss) income included the following as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (Dollars in thousands) Accumulated Deferred Accumulated Accumulated Deferred Accumulated Unrealized gains on securities available for sale $ 36,570 $ 8,411 $ 28,159 $ 102,278 $ 23,524 $ 78,754 Unrealized gains on securities available for sale transferred from (to) held to maturity 4,924 1,133 3,791 5,399 1,242 4,157 Defined benefit pension items (85,222) (19,601) (65,621) (91,751) (21,103) (70,648) Total $ (43,728) $ (10,057) $ (33,671) $ 15,926 $ 3,663 $ 12,263 The following table highlights changes in accumulated other comprehensive (loss) income by component for the three months ended March 31, 2021 and 2020: Three months ended March 31, 2021 (Dollars in thousands, net of tax) Unrealized gains on securities available for sale Unrealized gains on securities available for sale transferred to held to maturity Defined benefit pension items Total Beginning balance $ 78,754 $ 4,157 $ (70,648) $ 12,263 Net unrealized losses arising during period (43,506) — — (43,506) Amounts reclassified from accumulated other comprehensive income (7,089) (366) 5,027 (2,428) Net current period other comprehensive (loss) income (50,595) (366) 5,027 (45,934) Ending balance $ 28,159 $ 3,791 $ (65,621) $ (33,671) Three months ended March 31, 2020 (Dollars in thousands, net of tax) Unrealized gains on securities available for sale Unrealized gains on securities available for sale transferred to held to maturity Defined benefit pension items Total Beginning balance $ 5,792 $ — $ (132,515) $ (126,723) Net unrealized gains arising during period 111,530 — — 111,530 Amounts reclassified from accumulated other comprehensive loss (15,242) — 4,823 (10,419) Net current period other comprehensive income 96,288 — 4,823 101,111 Ending balance $ 102,080 $ — $ (127,692) $ (25,612) The following table presents the amounts reclassified from accumulated other comprehensive (loss) income and the line item affected in the statement where net income is presented for the three and three months ended March 31, 2021 and 2020: (Dollars in thousands) Three months ended March 31, 2021 Details about accumulated other comprehensive income (loss) Amounts reclassified from accumulated other comprehensive income (loss) Affected line item in the statement where net income is presented Unrealized gains on securities available for sale $ 9,207 Realized gains on investment securities available for sale, net (2,118) Income taxes $ 7,089 Accretion of unrealized gains on securities available for sale transferred to held to maturity $ 475 Net interest income (109) Income taxes $ 366 Amortization of defined benefit pension actuarial losses (6,529) Other noninterest expense 1,502 Income taxes $ (5,027) Total reclassifications for the period $ 2,428 (Dollars in thousands) Three months ended March 31, 2020 Details about accumulated other comprehensive income (loss) Amounts reclassified from accumulated other comprehensive income (loss) Affected line item in the statement where net income is presented Unrealized gains on securities available for sale $ 19,795 Realized gains on investment securities available for sale, net (4,553) Income taxes $ 15,242 Amortization of defined benefit pension actuarial losses (6,264) Other noninterest expense 1,441 Income taxes $ (4,823) Total reclassifications for the period $ 10,419

Estimated Fair Values

Estimated Fair Values3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]
Estimated Fair ValuesESTIMATED FAIR VALUES Fair value estimates are intended to represent the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. Where there is no active market for a financial instrument, BancShares has made estimates using discounted cash flows or other valuation techniques. Inputs used in these valuation techniques are subjective in nature, involve uncertainties and require significant judgment and therefore can only be derived within a range of precision. Accordingly, the derived fair value estimates presented below are not necessarily indicative of the amounts BancShares would realize in a current market exchange. ASC 820, Fair Value Measurements and Disclosures , indicates that assets and liabilities are recorded at fair value according to a fair value hierarchy comprised of three levels. The levels are based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The level within the fair value hierarchy for an asset or liability is based on the highest level of input that is significant to the fair value measurement (with Level 1 considered highest and Level 3 considered lowest). A brief description of each level follows: • Level 1 values are based on quoted prices for identical instruments in active markets. • Level 2 values are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 values are derived from valuation techniques in which one or more significant inputs or assumptions are not observable in the market. These unobservable inputs and assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation techniques include the use of discounted cash flow models and similar techniques. BancShares’ management reviews any changes to its valuation methodologies to ensure they are appropriate and supportable, and refines valuation methodologies as more market-based data becomes available. Accuracy of the levels of the fair value hierarchy are validated and transfers between levels of the fair value hierarchy are recognized at the end of the reporting period. The methodologies used to estimate the fair value of financial assets and financial liabilities are discussed below: Investment securities available for sale and held to maturity . The fair value of U.S. Treasury, government agency and mortgage-backed securities, municipal securities, as well as a portion of corporate bonds, is generally estimated using a third party pricing service. The third party provider evaluates securities based on comparable investments with trades and market data and will utilize pricing models that use a variety of inputs, such as benchmark yields, reported trades, broker-dealer quotes, issuer spreads, benchmark securities, bids and offers as needed. These securities are generally classified as Level 2. The remaining corporate bonds held are generally measured at fair value based on indicative bids from broker-dealers which are unadjusted and are not directly observable. These securities are considered Level 3. Investment in marketable equity securities. Equity securities are measured at fair value using observable closing prices and the market activity. Equity securities are classified as Level 1 if they are traded in an active market and as Level 2 if the observable closing price is from a less than active market. Loans held for sale. Management elects the fair value option on certain residential real estate loans originated to be sold to investors. The loans are carried at fair value based on quoted market prices for similar types of loans. Accordingly, the inputs used to calculate fair value of originated residential real estate loans held for sale are classified as Level 2 inputs. Loans held for investment subsequently transferred to held for sale are carried at fair value when a firm commitment to purchase from a counterparty exists. The fair value of the transferred loans is based on the quoted prices and is considered a Level 1 input. Net loans and leases. Fair value is estimated based on discounted future cash flows using the current interest rates at which loans with similar terms would be made to borrowers of similar credit quality. The inputs used in the fair value measurements for loans and leases are considered Level 3 inputs. FHLB stock . The carrying amount of FHLB stock is a reasonable estimate of fair value as these securities are not readily marketable and are evaluated for impairment based on the ultimate recoverability of the par value. BancShares considers positive and negative evidence, including the profitability and asset quality of the issuer, dividend payment history and recent redemption experience, when determining the ultimate recoverability of the par value. BancShares believes its investment in FHLB stock is ultimately recoverable at par. The inputs used in the fair value measurement for the FHLB stock are considered Level 2 inputs. Mortgage and other servicing rights. Mortgage and other servicing rights are carried at the lower of amortized cost or market value and are, therefore, carried at fair value only when fair value is less than the amortized cost. The fair value of mortgage and other servicing rights is performed using a pooling methodology. Similar loans are pooled together and a model that relies on discount rates, estimates of prepayment rates and the weighted average cost to service the loans is used to determine the fair value. The inputs used in the fair value measurement for mortgage and other servicing rights are considered Level 3 inputs. Deposits. For non-time deposits, carrying value is a reasonable estimate of fair value. The fair value of time deposits is estimated by discounting future cash flows using the interest rates currently offered for deposits with similar remaining maturities. The inputs used in the fair value measurement for deposits are considered Level 2 inputs. Borrowings. For borrowings, the fair values are determined based on recent trades or sales of the actual security if available. Otherwise, fair values are estimated by discounting future cash flows using current interest rates for similar financial instruments. The inputs used in the fair value measurement for FHLB borrowings, subordinated debentures, and other borrowings are considered Level 2 inputs. Payable to the FDIC for shared-loss agreements. The fair value of the payable to the FDIC for shared-loss agreements was determined based on payments to the FDIC in accordance with the shared-loss agreements. Cash flows were discounted using current discount rates to reflect the timing of the estimated amounts due to the FDIC. The inputs used in the fair value measurement for the payable to the FDIC were considered Level 3 inputs. Off-balance-sheet commitments and contingencies. Carrying amounts are reasonable estimates of the fair values for such financial instruments. Carrying amounts include unamortized fee income and, in some cases, reserves for any credit losses from those financial instruments. These amounts are not material to BancShares’ financial position. For all other financial assets and liabilities, the carrying value is a reasonable estimate of the fair value as of March 31, 2021 and December 31, 2020. The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk that would cause the fair value to differ from the carrying value. Cash and due from banks is classified on the fair value hierarchy as Level 1. Overnight investments, income earned not collected, securities sold under customer repurchase agreements, and accrued interest payable are considered Level 2. The table presents the carrying values and estimated fair values for financial instruments as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Carrying value Fair value Carrying value Fair value Assets Cash and due from banks $ 410,495 $ 410,495 $ 362,048 $ 362,048 Overnight investments 7,588,757 7,588,757 4,347,336 4,347,336 Investment in marketable equity securities 106,886 106,886 91,680 91,680 Investment securities available for sale 7,307,122 7,307,122 7,014,243 7,014,243 Investment securities held to maturity 2,808,099 2,774,982 2,816,982 2,838,499 Loans held for sale 129,334 129,334 124,837 124,837 Net loans and leases 32,970,200 33,202,437 32,567,661 33,298,166 Income earned not collected 148,022 148,022 145,694 145,694 Federal Home Loan Bank stock 40,563 40,563 45,392 45,392 Mortgage and other servicing rights 23,728 24,322 19,628 20,283 Liabilities Deposits with no stated maturity 44,601,552 44,601,552 40,542,596 40,542,596 Time deposits 2,729,445 2,738,244 2,889,013 2,905,577 Securities sold under customer repurchase agreements 680,705 680,705 641,487 641,487 Federal Home Loan Bank borrowings 648,671 664,996 655,175 677,579 Subordinated debt 497,153 517,091 504,518 525,610 Other borrowings 84,502 85,067 88,470 89,263 FDIC shared-loss payable — — 15,601 15,843 Accrued interest payable 5,149 5,149 9,414 9,414 For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of March 31, 2021 and December 31, 2020: March 31, 2021 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale Government agency $ 846,686 $ — $ 846,686 $ — Residential mortgage-backed securities 4,758,589 — 4,758,589 — Commercial mortgage-backed securities 1,098,987 — 1,098,987 — Corporate bonds 602,860 — 284,744 318,116 Total investment securities available for sale $ 7,307,122 $ — $ 6,989,006 $ 318,116 Marketable equity securities $ 106,886 $ 43,677 $ 63,209 $ — Loans held for sale $ 129,334 $ — $ 129,334 $ — December 31, 2020 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 499,933 $ — $ 499,933 $ — Government agency 701,391 — 701,391 — Residential mortgage-backed securities 4,438,103 — 4,438,103 — Commercial mortgage-backed securities 771,537 — 771,537 — Corporate bonds 603,279 — 286,655 316,624 Total investment securities available for sale $ 7,014,243 $ — $ 6,697,619 $ 316,624 Marketable equity securities $ 91,680 $ 32,855 $ 58,825 $ — Loans held for sale $ 124,837 $ — $ 124,837 $ — The following tables summarize activity for Level 3 assets: Corporate bonds Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 316,624 $ 69,685 Unrealized net losses (gains) included in other comprehensive income 2,333 (4,366) Amounts included in net income (91) (85) Transfers in — 1,782 Sales / Calls (750) — Ending balance $ 318,116 $ 67,016 During the three months ended March 31, 2021, there were no transfers between levels. During the three months ended March 31, 2020, there were transfers from Level 2 to Level 3 of $1.8 million. The transfers were due to a lack of observable inputs and trade activity for those securities. The following table presents quantitative information about Level 3 fair value measurements for fair value on a recurring basis at March 31, 2021: (Dollars in thousands) March 31, 2021 Level 3 assets Valuation technique Significant unobservable input Fair Value Corporate bonds Indicative bid provided by broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the issuer $ 318,116 Fair Value Option BancShares has elected the fair value option for residential real estate loans originated to be sold. This election reduces certain timing differences in the Consolidated Statement of Income and better aligns with the management of the portfolio from a business perspective. The changes in fair value were recorded as a component of mortgage income and included a loss of $2.7 million and a gain of $1.2 million for the three months ended March 31, 2021 and 2020, respectively. Interest earned on loans held for sale is recorded within interest income on loans and leases in the consolidated statements of income. The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for residential real estate originated for sale measured at fair value as of March 31, 2021 and December 31, 2020: March 31, 2021 (Dollars in thousands) Fair value Aggregate unpaid principal balance Difference Originated loans held for sale $ 129,334 $ 126,113 $ 3,221 December 31, 2020 Fair value Aggregate unpaid principal balance Difference Originated loans held for sale $ 124,837 $ 118,902 $ 5,935 No originated loans held for sale were 90 or more days past due or on nonaccrual status as of March 31, 2021 or December 31, 2020. We may be required to measure certain financial assets at fair value on a nonrecurring basis. These adjustments to fair value usually result from the application of lower of amortized cost or fair value accounting or write-downs of individual assets due to impairment. The population of loans measured at fair value on a non-recurring basis is limited to collateral-dependent loans evaluated individually. These collateral-dependent loans are deemed to be at fair value if there is an associated ACL or if a charge-off has been recorded in the previous 12 months. Collateral values are determined using appraisals or other third-party value estimates of the subject property discounted based on estimated selling costs, generally between 6% and 10%, and immaterial adjustments for other external factors that may impact the marketability of the collateral. The weighted average discount for estimated selling costs applied was 6.81%. OREO acquired or written down within the previous 12 months is deemed to be at fair value. Asset valuations are determined by using appraisals or other third-party value estimates of the subject property with discounts generally between 6% and 15% applied for estimated selling costs and other external factors that may impact the marketability of the property. At March 31, 2021, the weighted average discount applied was 8.76%. Changes to the value of the assets between scheduled valuation dates are monitored through continued communication with brokers and monthly reviews by the asset manager assigned to each asset. If there are any significant changes in the market or the subject property, valuations are adjusted or new appraisals ordered to ensure the reported values reflect the most current information. For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of March 31, 2021 and December 31, 2020: March 31, 2021 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Collateral-dependent loans $ 10,247 $ — $ — $ 10,247 Other real estate owned 36,642 — — 36,642 Mortgage servicing rights 20,409 — — 20,409 December 31, 2020 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Collateral-dependent loans $ 11,779 $ — $ — $ 11,779 Other real estate owned 40,115 — — 40,115 Mortgage servicing rights 16,966 — — 16,966 No financial liabilities were carried at fair value on a nonrecurring basis as of March 31, 2021 and December 31, 2020.

Employee Benefit Plans

Employee Benefit Plans3 Months Ended
Mar. 31, 2021
Retirement Benefits, Description [Abstract]
Employee Benefit PlansEMPLOYEE BENEFIT PLANS BancShares sponsors noncontributory defined benefit pension plans for its qualifying employees. The service cost component of net periodic benefit cost is included in salaries and wages while all other non-service cost components are included in other noninterest expense. For the three months ended March 31, 2021 and 2020, the components of net periodic benefit cost are as follows: Three months ended March 31 (Dollars in thousands) 2021 2020 Service cost $ 3,653 $ 3,457 Interest cost 7,404 8,531 Expected return on assets (19,595) (16,409) Amortization of net actuarial loss 6,529 6,264 Net periodic (benefit) cost $ (2,009) $ 1,843 No discretionary contribution was made to the pension plans during the three months ended March 31, 2021. The funding policy of the pension plans is to contribute an amount each year to meet all Employee Retirement Income Security Act minimum requirements, including amounts to meet quarterly funding requirements, avoid “at-risk” status and avoid any benefit restrictions. BancShares may also contribute additional voluntary amounts each year (up to the maximum tax-deductible amount) in order to achieve certain target funding levels in the plans, with consideration also given to current and future cash flow and tax positions. No contributions are currently expected for the year ending December 31, 2021.

Leases

Leases3 Months Ended
Mar. 31, 2021
Leases [Abstract]
LeasesLEASES The following table presents right-of-use lease assets and liabilities as of March 31, 2021 and December 31, 2020: (Dollars in thousands) Classification March 31, 2021 December 31, 2020 Assets: Operating Other assets $ 65,330 $ 68,048 Finance Premises and equipment 5,936 6,478 Total leased assets $ 71,266 $ 74,526 Liabilities: Operating Other liabilities $ 65,841 $ 68,343 Finance Other borrowings 5,915 6,308 Total lease liabilities $ 71,756 $ 74,651
LeasesLEASES The following table presents right-of-use lease assets and liabilities as of March 31, 2021 and December 31, 2020: (Dollars in thousands) Classification March 31, 2021 December 31, 2020 Assets: Operating Other assets $ 65,330 $ 68,048 Finance Premises and equipment 5,936 6,478 Total leased assets $ 71,266 $ 74,526 Liabilities: Operating Other liabilities $ 65,841 $ 68,343 Finance Other borrowings 5,915 6,308 Total lease liabilities $ 71,756 $ 74,651

Commitments and Contingencies

Commitments and Contingencies3 Months Ended
Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and ContingenciesCOMMITMENTS AND CONTINGENCIES To meet the financing needs of its customers, BancShares and its subsidiaries have financial instruments with off-balance sheet risk. These financial instruments involve elements of credit, interest rate or liquidity risk and include commitments to extend credit and standby letters of credit. Commitments to extend credit are legally binding agreements to lend to customers. These commitments generally have fixed expiration dates or other termination clauses and may require payment of fees. Since many of these commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. Established credit standards control the credit risk exposure associated with these commitments. In some cases, BancShares requires collateral be pledged to secure the commitment, including cash deposits, securities and other assets. Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those commitments are primarily issued to support public and private borrowing arrangements. To mitigate its risk, BancShares’ credit policies govern the issuance of standby letters of credit. The credit risk related to the issuance of these letters of credit is essentially the same as in extending loans to clients and, therefore, these letters of credit are collateralized when necessary. The following table presents the commitments to extend credit and standby letters of credit as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Unused commitments to extend credit $ 12,126,186 $ 12,098,417 Standby letters of credit 139,572 129,819 BancShares has investments in qualified affordable housing projects primarily for the purposes of fulfilling Community Reinvestment Act requirements and obtaining tax credits. Affordable housing project investments were $162.4 million and $163.9 million as of March 31, 2021 and December 31, 2020, respectively, and were recorded in other assets. Unfunded commitments to fund future investments in affordable housing projects totaled $49.7 million and $53.7 million as of March 31, 2021 and December 31, 2020, respectively, and were recorded in other liabilities. BancShares and various subsidiaries have been named as defendants in legal actions arising from their normal business activities in which damages in various amounts were claimed. BancShares has also been exposed to litigation risk relating to the prior business activities of banks from which assets were acquired and liabilities assumed in the various merger transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on BancShares’ consolidated financial statements.

Accounting Policies and Basis_2

Accounting Policies and Basis of Presentation Policies (Policies)3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
ReclassificationsReclassifications In certain instances, amounts reported in prior periods’ consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported cash flows, shareholders’ equity or net income.
Use of EstimatesUse of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions which affect the amounts reported. Actual results could differ from those estimates. The estimates BancShares considers significant are the allowance for credit losses, “ACL”, fair value measurements, and income taxes.
New Accounting PronouncementsRecently Issued Accounting Pronouncements There were no Accounting Standards Updates (“ASUs”) issued during the first quarter of 2021 by the Financial Accounting Standards Board (“FASB”) that will have a material impact on BancShares’ consolidated financial statements.

Investments (Tables)

Investments (Tables)3 Months Ended
Mar. 31, 2021
Investments [Abstract]
Aggregate Values And Unrealized Gains And Losses Of Investment SecuritiesThe amortized cost and fair value of investment securities at March 31, 2021 and December 31, 2020, were as follows: March 31, 2021 (Dollars in thousands) Amortized cost Gross Gross unrealized Fair Investment securities available for sale Government agency $ 852,305 $ 784 $ 6,403 $ 846,686 Residential mortgage-backed securities 4,736,893 47,742 26,046 4,758,589 Commercial mortgage-backed securities 1,096,259 14,619 11,891 1,098,987 Corporate bonds 585,095 18,313 548 602,860 Total investment securities available for sale $ 7,270,552 $ 81,458 $ 44,888 $ 7,307,122 Investment in marketable equity securities 84,297 22,872 283 106,886 Investment securities held to maturity Residential mortgage-backed securities 1,740,314 5,191 20,510 1,724,995 Commercial mortgage-backed securities 1,065,778 13 17,811 1,047,980 Other 2,007 — — 2,007 Total investment securities held to maturity 2,808,099 5,204 38,321 2,774,982 Total investment securities $ 10,162,948 $ 109,534 $ 83,492 $ 10,188,990 December 31, 2020 (Dollars in thousands) Amortized cost Gross Gross unrealized Fair Investment securities available for sale U.S. Treasury $ 499,832 $ 101 $ — $ 499,933 Government agency 706,241 723 5,573 701,391 Residential mortgage-backed securities 4,369,130 70,283 1,310 4,438,103 Commercial mortgage-backed securities 745,892 25,645 — 771,537 Corporate bonds 590,870 14,437 2,028 603,279 Total investment securities available for sale $ 6,911,965 $ 111,189 $ 8,911 $ 7,014,243 Investment in marketable equity securities 84,837 8,654 1,811 91,680 Investment securities held to maturity Residential mortgage-backed securities 1,877,692 17,689 — 1,895,381 Commercial mortgage-backed securities 937,034 3,884 56 940,862 Other 2,256 — — 2,256 Total investment securities held to maturity 2,816,982 21,573 56 2,838,499 Total investment securities $ 9,813,784 $ 141,416 $ 10,778 $ 9,944,422
Investment Securities Maturity InformationThe following table provides the amortized cost and fair value by contractual maturity for investment securities available for sale and held to maturity. Expected maturities will differ from contractual maturities on certain securities because issuers and borrowers of underlying collateral may have the right to call or prepay obligations with or without prepayment penalties. Residential and commercial mortgage-backed and government agency securities are stated separately as they are not due at a single maturity date. March 31, 2021 December 31, 2020 (Dollars in thousands) Amortized cost Fair Amortized cost Fair Investment securities available for sale Non-amortizing securities maturing in: One year or less $ 1,020 $ 1,021 $ 500,846 $ 500,954 One through five years 72,340 74,536 72,565 73,881 Five through 10 years 502,757 517,922 508,320 519,570 Over 10 years 8,978 9,381 8,971 8,807 Government agency 852,305 846,686 706,241 701,391 Residential mortgage-backed securities 4,736,893 4,758,589 4,369,130 4,438,103 Commercial mortgage-backed securities 1,096,259 1,098,987 745,892 771,537 Total investment securities available for sale $ 7,270,552 $ 7,307,122 $ 6,911,965 $ 7,014,243 Investment securities held to maturity Non-amortizing securities maturing in: One year or less 998 998 1,507 1,507 One through five years 1,009 1,009 749 749 Residential mortgage-backed securities 1,740,314 1,724,995 1,877,692 1,895,381 Commercial mortgage-backed securities 1,065,778 1,047,980 937,034 940,862 Total investment securities held to maturity $ 2,808,099 $ 2,774,982 $ 2,816,982 $ 2,838,499
Available-for-sale SecuritiesThe following table provides the gross realized gains and losses on the sales of investment securities available for sale for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Gross realized gains on sales of investment securities available for sale $ 9,207 $ 20,474 Gross realized losses on sales of investment securities available for sale — (679) Net realized gains on sales of investment securities available for sale $ 9,207 $ 19,795
Marketable Securities Gains (Losses)The following table provides the realized and unrealized gains and losses on marketable equity securities for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Marketable equity securities gains (losses), net $ 16,011 $ (51,408) Less net gains recognized on marketable equity securities sold 263 323 Unrealized gains (losses) recognized on marketable equity securities held $ 15,748 $ (51,731)
Investment Securities With Unrealized LossesThe following table provides information regarding securities with unrealized losses as of March 31, 2021 and December 31, 2020: March 31, 2021 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale Government agency $ 331,034 $ 3,501 $ 415,379 $ 2,902 $ 746,413 $ 6,403 Residential mortgage-backed securities 2,345,301 26,001 12,495 45 2,357,796 26,046 Commercial mortgage-backed securities 685,575 11,891 — — 685,575 11,891 Corporate bonds 8,394 14 26,183 534 34,577 548 Total $ 3,370,304 $ 41,407 $ 454,057 $ 3,481 $ 3,824,361 $ 44,888 December 31, 2020 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale Government agency $ 268,622 $ 3,197 $ 328,777 $ 2,376 $ 597,399 $ 5,573 Residential mortgage-backed securities 433,816 1,241 23,064 69 456,880 1,310 Corporate bonds 57,715 2,028 — — 57,715 2,028 Total $ 760,153 $ 6,466 $ 351,841 $ 2,445 $ 1,111,994 $ 8,911

Loans and Leases (Tables)

Loans and Leases (Tables)3 Months Ended
Mar. 31, 2021
Loans and Leases Receivable Disclosure [Abstract]
Loans And Leases OutstandingLoans and leases outstanding included the following at March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Commercial: Construction and land development $ 1,022,087 $ 985,424 Owner occupied commercial mortgage 11,340,966 11,165,012 Non-owner occupied commercial mortgage 3,017,898 2,987,689 Commercial and industrial and leases 4,946,445 5,013,644 SBA-PPP 2,769,906 2,406,291 Total commercial loans 23,097,302 22,558,060 Consumer: Residential mortgage 5,566,026 5,561,686 Revolving mortgage 1,938,422 2,052,854 Construction and land development 336,065 348,123 Consumer auto 1,271,586 1,255,402 Consumer other 538,677 552,968 Total consumer loans 9,650,776 9,771,033 PCD loans 432,773 462,882 Total loans and leases $ 33,180,851 $ 32,791,975
Schedule of Amortized Cost of LoansThe following table presents selected components of the amortized cost of loans. (Dollars in thousands) March 31, 2021 December 31, 2020 Deferred fees, including unearned fees and unamortized costs on non-PCD loans Net deferred fees related to SBA-PPP loans $ 66,717 $ 41,064 Net deferred fees related to other portfolios 11,932 9,153 Total net deferred fees $ 78,649 $ 50,217 Net unamortized discount on purchased loans Non-PCD $ 17,009 $ 19,473 PCD 41,141 45,254 Total $ 58,150 $ 64,727
Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still AccruingMarch 31, 2021 (Dollars in thousands) 30-59 days 60-89 days 90 days or greater Total past Current Total loans Commercial: Construction and land development $ 277 $ — $ 1,595 $ 1,872 $ 1,020,215 $ 1,022,087 Owner occupied commercial mortgage 13,153 2,996 11,028 27,177 11,313,789 11,340,966 Non-owner occupied commercial mortgage 5,046 303 8,917 14,266 3,003,632 3,017,898 Commercial and industrial and leases 13,284 4,771 3,249 21,304 4,925,141 4,946,445 SBA-PPP — — — — 2,769,906 2,769,906 Total commercial loans 31,760 8,070 24,789 64,619 23,032,683 23,097,302 Consumer: Residential mortgage 34,350 7,396 30,789 72,535 5,493,491 5,566,026 Revolving mortgage 6,222 1,603 8,531 16,356 1,922,066 1,938,422 Construction and land development 266 944 652 1,862 334,203 336,065 Consumer auto 4,432 1,014 860 6,306 1,265,280 1,271,586 Consumer other 2,246 1,213 1,516 4,975 533,702 538,677 Total consumer loans 47,516 12,170 42,348 102,034 9,548,742 9,650,776 PCD loans 11,250 4,322 33,694 49,266 383,507 432,773 Total loans and leases $ 90,526 $ 24,562 $ 100,831 $ 215,919 $ 32,964,932 $ 33,180,851 December 31, 2020 (Dollars in thousands) 30-59 days 60-89 days 90 days or greater Total past Current Total loans Commercial: Construction and land development $ 956 $ 527 $ 1,603 $ 3,086 $ 982,338 $ 985,424 Owner occupied commercial mortgage 8,757 2,232 14,082 25,071 11,139,941 11,165,012 Non-owner occupied commercial mortgage 12,370 — 5,973 18,343 2,969,346 2,987,689 Commercial and industrial and leases 14,532 2,842 3,243 20,617 4,993,027 5,013,644 SBA-PPP — — — — 2,406,291 2,406,291 Total commercial loans 36,615 5,601 24,901 67,117 22,490,943 22,558,060 Consumer: Residential mortgage 43,218 8,364 31,690 83,272 5,478,414 5,561,686 Revolving mortgage 11,977 2,626 7,415 22,018 2,030,836 2,052,854 Construction and land development 932 77 330 1,339 346,784 348,123 Consumer auto 6,825 1,835 1,076 9,736 1,245,666 1,255,402 Consumer other 3,610 1,464 1,505 6,579 546,389 552,968 Total consumer loans 66,562 14,366 42,016 122,944 9,648,089 9,771,033 PCD loans 18,322 6,076 31,026 55,424 407,458 462,882 Total loans and leases $ 121,499 $ 26,043 $ 97,943 $ 245,485 $ 32,546,490 $ 32,791,975 The amortized cost, by class, of loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at March 31, 2021 and December 31, 2020, were as follows: March 31, 2021 December 31, 2020 (Dollars in thousands) Nonaccrual Loans and Nonaccrual Loans and Commercial: Construction and land development $ 1,648 $ — $ 1,661 $ — Owner occupied commercial mortgage 22,796 1,400 23,103 3,625 Non-owner occupied commercial mortgage 10,939 2,211 7,932 147 Commercial and industrial and leases 15,718 607 10,626 540 Total commercial loans 51,101 4,218 43,322 4,312 Consumer: Residential mortgage 61,907 29 66,345 — Revolving mortgage 23,952 — 22,236 — Construction and land development 566 543 652 — Consumer auto 3,027 — 3,166 — Consumer other 816 1,155 823 1,195 Total consumer loans 90,268 1,727 93,222 1,195 PCD loans 53,165 1,432 54,939 355 Total loans and leases $ 194,534 $ 7,377 $ 191,483 $ 5,862
Composition Of The Loans And Leases Outstanding By Credit Quality IndicatorThe following tables represent current credit quality indicators by origination year as of March 31, 2021. March 31, 2021 Commercial Loans Amortized Cost Basis by Origination Year Classification: 2021 2020 2019 2018 2017 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Construction and land development Pass $ 46,039 $ 399,172 $ 310,753 $ 168,534 $ 48,089 $ 28,797 $ 12,548 $ — $ 1,013,932 Special Mention — 232 — 181 85 — 145 — 643 Substandard — 225 590 1,447 5,170 80 — — 7,512 Total 46,039 399,629 311,343 170,162 53,344 28,877 12,693 — 1,022,087 Owner occupied commercial mortgage Pass 632,239 3,202,842 2,166,465 1,521,886 1,206,771 2,249,426 106,579 101 11,086,309 Special Mention 687 10,398 29,975 39,868 12,074 37,441 2,974 72 133,489 Substandard 3,564 9,322 14,441 9,287 26,702 49,856 7,996 — 121,168 Total 636,490 3,222,562 2,210,881 1,571,041 1,245,547 2,336,723 117,549 173 11,340,966 Non-owner occupied commercial mortgage Pass 158,815 809,647 603,274 332,010 319,514 638,882 35,835 — 2,897,977 Special Mention 794 676 880 10,778 1,440 2,918 500 — 17,986 Substandard 75 12,018 22,293 12,643 8,762 44,396 1,748 — 101,935 Total 159,684 822,341 626,447 355,431 329,716 686,196 38,083 — 3,017,898 Commercial and industrial and leases Pass 424,035 1,423,941 884,987 442,129 251,356 445,265 874,664 5,150 4,751,527 Special Mention 102 10,601 22,183 8,335 6,160 7,764 11,376 194 66,715 Substandard 5,507 15,179 4,398 5,572 3,950 5,597 24,608 1,410 66,221 Doubtful — — — — — — 2 — 2 Ungraded — — — — — — 61,980 — 61,980 Total 429,644 1,449,721 911,568 456,036 261,466 458,626 972,630 6,754 4,946,445 SBA-PPP Pass 936,012 1,833,894 — — — — — — 2,769,906 Total commercial $ 2,207,869 $ 7,728,147 $ 4,060,239 $ 2,552,670 $ 1,890,073 $ 3,510,422 $ 1,140,955 $ 6,927 $ 23,097,302 Consumer and PCD Loans Amortized Cost Basis by Origination Year Days Past Due: 2021 2020 2019 2018 2017 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Residential mortgage Current $ 521,849 $ 1,810,979 $ 889,902 $ 561,267 $ 518,205 $ 1,166,958 $ 24,331 $ — $ 5,493,491 30-59 days 2,367 2,193 236 9,619 4,113 15,567 255 — 34,350 60-89 days — 256 1,012 1,040 558 4,530 — — 7,396 90 days or greater — 286 1,455 838 3,797 24,384 29 — 30,789 Total 524,216 1,813,714 892,605 572,764 526,673 1,211,439 24,615 — 5,566,026 Revolving mortgage Current — — — — — — 1,772,173 149,893 1,922,066 30-59 days — — — — — — 3,877 2,345 6,222 60-89 days — — — — — — 699 904 1,603 90 days or greater — — — — — — 4,112 4,419 8,531 Total — — — — — — 1,780,861 157,561 1,938,422 Construction and land development Current 40,360 209,701 52,406 16,883 8,037 5,241 1,575 — 334,203 30-59 days — 108 15 61 30 52 — — 266 60-89 days — 240 138 59 366 141 — — 944 90 days or greater — 543 — — 59 50 — — 652 Total 40,360 210,592 52,559 17,003 8,492 5,484 1,575 — 336,065 Consumer auto Current 155,101 484,026 302,622 191,055 87,139 45,337 — — 1,265,280 30-59 days — 1,327 962 1,054 703 386 — — 4,432 60-89 days — 433 197 253 117 14 — — 1,014 90 days or greater — 294 134 217 129 86 — — 860 Total 155,101 486,080 303,915 192,579 88,088 45,823 — — 1,271,586 Consumer other Current 20,879 45,239 22,631 8,552 6,246 34,873 395,282 — 533,702 30-59 days 3 131 100 106 1 — 1,905 — 2,246 60-89 days — 95 7 10 — — 1,101 — 1,213 90 days or greater — 14 114 6 — — 1,382 — 1,516 Total 20,882 45,479 22,852 8,674 6,247 34,873 399,670 — 538,677 Total consumer $ 740,559 $ 2,555,865 $ 1,271,931 $ 791,020 $ 629,500 $ 1,297,619 $ 2,206,721 $ 157,561 $ 9,650,776 PCD loans Current $ — $ 28,056 $ 24,347 $ 26,763 $ 24,879 $ 247,606 $ 11,788 $ 20,068 $ 383,507 30-59 days — 344 390 407 300 9,423 19 367 11,250 60-89 days — 51 88 — 165 3,896 — 122 4,322 90 days or greater — 1,294 2,404 4,412 1,826 22,504 105 1,149 33,694 Total PCD $ — $ 29,745 $ 27,229 $ 31,582 $ 27,170 $ 283,429 $ 11,912 $ 21,706 $ 432,773 Total loans and leases $ 2,948,428 $ 10,313,757 $ 5,359,399 $ 3,375,272 $ 2,546,743 $ 5,091,470 $ 3,359,588 $ 186,194 $ 33,180,851 The following tables represent current credit quality indicators by origination year as of December 31, 2020. December 31, 2020 Commercial Loans Amortized Cost Basis by Origination Year Classification: 2020 2019 2018 2017 2016 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Construction and land development Pass $ 342,183 $ 341,233 $ 190,429 $ 50,776 $ 23,969 $ 11,306 $ 10,969 $ — $ 970,865 Special Mention 246 — 6,421 5,342 — — 153 — 12,162 Substandard 229 629 1,450 — 8 81 — — 2,397 Total 342,658 341,862 198,300 56,118 23,977 11,387 11,122 — 985,424 Owner occupied commercial mortgage Pass 3,183,467 2,201,165 1,625,141 1,301,412 1,049,858 1,454,020 101,556 133 10,916,752 Special Mention 6,274 20,702 36,739 12,387 17,699 25,693 5,115 72 124,681 Substandard 10,280 19,052 9,842 20,928 13,736 41,303 8,438 — 123,579 Total 3,200,021 2,240,919 1,671,722 1,334,727 1,081,293 1,521,016 115,109 205 11,165,012 Non-owner occupied commercial mortgage Pass 865,514 609,975 378,136 331,800 282,810 391,517 32,149 — 2,891,901 Special Mention 569 905 10,794 1,808 5,121 3,279 483 — 22,959 Substandard 2,899 18,546 12,296 8,764 14,087 15,427 810 — 72,829 Total 868,982 629,426 401,226 342,372 302,018 410,223 33,442 — 2,987,689 Commercial and industrial and leases Pass 1,620,622 983,852 504,463 310,468 234,735 286,996 899,978 5,520 4,846,634 Special Mention 3,146 17,065 7,265 5,393 3,307 4,912 9,152 189 50,429 Substandard 17,811 4,095 4,370 4,257 2,548 3,801 22,384 983 60,249 Ungraded — — — — — — 56,332 — 56,332 Total 1,641,579 1,005,012 516,098 320,118 240,590 295,709 987,846 6,692 5,013,644 SBA-PPP Pass 2,406,291 — — — — — — — 2,406,291 Total commercial $ 8,459,531 $ 4,217,219 $ 2,787,346 $ 2,053,335 $ 1,647,878 $ 2,238,335 $ 1,147,519 $ 6,897 $ 22,558,060 Consumer and PCD Loans Amortized Cost Basis by Origination Year Days Past Due: 2020 2019 2018 2017 2016 Prior Revolving Revolving converted to term loans Total (Dollars in thousands) Residential mortgage Current $ 1,882,683 $ 978,298 $ 655,798 $ 596,309 $ 461,719 $ 878,634 $ 24,973 $ — $ 5,478,414 30-59 days 2,278 4,573 11,463 3,772 8,613 12,299 220 — 43,218 60-89 days 30 100 1,246 1,449 834 4,705 — — 8,364 90 days or greater 282 4,831 3,150 4,015 5,689 13,723 — — 31,690 Total 1,885,273 987,802 671,657 605,545 476,855 909,361 25,193 — 5,561,686 Revolving mortgage Current — — — — — — 1,879,968 150,868 2,030,836 30-59 days — — — — — — 8,241 3,736 11,977 60-89 days — — — — — — 527 2,099 2,626 90 days or greater — — — — — — 2,301 5,114 7,415 Total — — — — — — 1,891,037 161,817 2,052,854 Construction and land development Current 215,112 85,707 24,860 10,269 6,093 2,218 2,525 — 346,784 30-59 days — 420 121 370 — 21 — — 932 60-89 days — — — 9 — 68 — — 77 90 days or greater — — — — — 330 — — 330 Total 215,112 86,127 24,981 10,648 6,093 2,637 2,525 — 348,123 Consumer auto Current 521,719 340,594 219,597 104,280 49,872 9,604 — — 1,245,666 30-59 days 2,175 1,873 1,257 842 544 134 — — 6,825 60-89 days 329 689 312 351 109 45 — — 1,835 90 days or greater 170 527 217 57 102 3 — — 1,076 Total 524,393 343,683 221,383 105,530 50,627 9,786 — — 1,255,402 Consumer other Current 53,842 27,117 10,911 7,159 2,980 29,336 415,044 — 546,389 30-59 days 322 114 77 18 11 7 3,061 — 3,610 60-89 days 102 20 13 18 3 23 1,285 — 1,464 90 days or greater 53 84 8 — — — 1,360 — 1,505 Total 54,319 27,335 11,009 7,195 2,994 29,366 420,750 — 552,968 Total consumer $ 2,679,097 $ 1,444,947 $ 929,030 $ 728,918 $ 536,569 $ 951,150 $ 2,339,505 $ 161,817 $ 9,771,033 PCD loans Current $ 31,475 $ 25,425 $ 27,183 $ 27,955 $ 28,995 $ 232,186 $ 13,212 $ 21,027 $ 407,458 30-59 days 999 925 801 718 1,341 12,637 156 745 18,322 60-89 days 447 81 312 695 97 4,098 9 337 6,076 90 days or greater 721 2,325 4,755 1,208 897 19,963 111 1,046 31,026 Total PCD $ 33,642 $ 28,756 $ 33,051 $ 30,576 $ 31,330 $ 268,884 $ 13,488 $ 23,155 $ 462,882 Total loans and leases $ 11,172,270 $ 5,690,922 $ 3,749,427 $ 2,812,829 $ 2,215,777 $ 3,458,369 $ 3,500,512 $ 191,869 $ 32,791,975
Schedule of Loans Pledged as CollateralThe following table provides information regarding loans pledged as collateral for borrowing capacity through the FHLB of Atlanta and the Federal Reserve Bank (“FRB”) as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 FHLB of Atlanta Lendable collateral value of pledged non-PCD loans $ 8,847,178 $ 8,637,844 Less: Advances 648,671 652,675 Available borrowing capacity $ 8,198,507 $ 7,985,169 Pledged non-PCD loans $ 12,327,626 $ 12,157,153 FRB Lendable collateral value of pledged non-PCD loans $ 3,367,466 $ 3,321,762 Less: Advances — — Available borrowing capacity $ 3,367,466 $ 3,321,762 Pledged non-PCD loans $ 4,181,520 $ 4,104,866

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)3 Months Ended
Mar. 31, 2021
Receivables [Abstract]
Allowance for Credit LossesActivity in the ACL by portfolio segment is summarized as follows: Three months ended March 31, 2021 (Dollars in thousands) Commercial Consumer PCD Total Balance at January 1 $ 80,842 $ 119,485 $ 23,987 $ 224,314 Provision (credit) (3,922) (5,504) (1,548) (10,974) Charge-offs (3,331) (4,469) (763) (8,563) Recoveries 1,275 3,340 1,259 5,874 Balance at March 31 $ 74,864 $ 112,852 $ 22,935 $ 210,651 Three months ended March 31, 2020 (Dollars in thousands) Commercial Consumer PCD Total Balance at December 31 $ 142,369 $ 75,236 $ 7,536 $ 225,141 Adoption of ASC 326 (87,554) 30,629 19,001 (37,924) Balance at January 1 54,815 105,865 26,537 187,217 Provision (credit) 21,537 9,406 (2,588) 28,355 Initial allowance on PCD loans — — 1,193 1,193 Charge-offs (5,369) (7,769) (1,123) (14,261) Recoveries 1,427 2,431 2,897 6,755 Balance at March 31 $ 72,410 $ 109,933 $ 26,916 $ 209,259 BancShares records an allowance for credit losses on unfunded commitments within other liabilities. Activity in the allowance for credit losses for unfunded commitments is summarized as follows: Three months ended March 31 (Dollars in thousands) 2021 2020 Allowance for credit losses: Beginning balance $ 12,814 $ 1,055 Adoption of ASC 326 — 8,885 Adjusted beginning balance $ 12,814 $ 9,940 Provision (credit) (1,243) 572 Ending balance 11,571 10,512 The following table presents information on collateral-dependent loans by class and includes the amortized cost of collateral-dependent loans and leases, the net realizable value of the collateral, the extent to which collateral secures collateral-dependent loans and the associated ACL as of March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 (Dollars in thousands) Collateral-Dependant Loans Net Realizable Value of Collateral Collateral Coverage Allowance for Credit Losses Commercial loans: Construction and land development $ 1,424 $ 1,795 126.1 % $ — Owner occupied commercial mortgage 11,886 16,417 138.1 — Non-owner occupied commercial mortgage 6,951 9,312 134.0 — Commercial and industrial and leases 1,256 2,916 232.2 — Total commercial loans 21,517 30,440 141.5 — Consumer: Residential mortgage 21,303 27,279 128.1 120 Revolving mortgage 1,385 1,724 124.5 — Total consumer loans 22,688 29,003 127.8 120 PCD loans 20,361 35,016 172.0 — Total collateral-dependent loans $ 64,566 $ 94,459 146.3 % $ 120 December 31, 2020 (Dollars in thousands) Collateral-Dependant Loans Net Realizable Value of Collateral Collateral Coverage Allowance for Credit Losses Commercial loans: Construction and land development $ 1,424 $ 1,795 126.1 % $ — Owner occupied commercial mortgage 9,792 14,253 145.6 — Non-owner occupied commercial mortgage 5,556 7,577 136.4 — Total commercial loans 16,772 23,625 140.9 — Consumer: Residential mortgage 23,011 29,775 129.4 131 PCD loans 19,042 27,872 146.4 — Total collateral-dependent loans $ 58,825 $ 81,272 138.2 % $ 131
Troubled Debt Restructurings on Financing ReceivablesThe following tables provides a summary of total TDRs by accrual status: March 31, 2021 December 31, 2020 (Dollars in thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial loans: Construction and land development $ 529 $ 41 $ 570 $ 578 $ 54 $ 632 Owner occupied commercial mortgage 38,969 9,986 48,955 37,574 10,889 48,463 Non-owner occupied commercial mortgage 20,541 1,335 21,876 18,336 1,649 19,985 Commercial and industrial and leases 30,956 6,551 37,507 29,131 3,528 32,659 Total commercial loans 90,995 17,913 108,908 85,619 16,120 101,739 Consumer: Residential mortgage 25,323 20,802 46,125 29,458 19,380 48,838 Revolving mortgage 18,729 7,331 26,060 20,124 7,128 27,252 Construction and land development 1,501 9 1,510 1,573 9 1,582 Consumer auto 2,173 668 2,841 2,018 696 2,714 Consumer other 910 163 1,073 955 137 1,092 Total consumer loans 48,636 28,973 77,609 54,128 27,350 81,478 PCD loans 20,920 9,509 30,429 17,617 7,346 24,963 Total loans $ 160,551 $ 56,395 $ 216,946 $ 157,364 $ 50,816 $ 208,180 The following table provides the types of modifications designated as TDRs during the three months ended March 31, 2021 and March 31, 2020, as well as a summary of loans modified as a TDR during the twelve-month periods ended March 31, 2021 and March 31, 2020 that subsequently defaulted during the three months ended March 31, 2021 and March 31, 2020. BancShares defines payment default as movement of the TDR to nonaccrual status, which is generally 90 days past due for TDRs, foreclosure or charge-off, whichever occurs first. Three months ended March 31, 2021 Three months ended March 31, 2020 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Loans and leases Interest only 6 $ 6,947 2 $ 42 10 $ 3,986 — $ — Loan term extension 25 3,863 12 1,749 6 794 3 263 Below market interest rate 53 8,122 20 1,428 88 8,165 29 1,421 Discharged from bankruptcy 45 4,100 12 2,365 68 5,032 28 1,767 Total restructurings 129 $ 23,032 46 $ 5,584 172 $ 17,977 60 $ 3,451 For the three months ended March 31, 2021 and March 31, 2020, the pre-modification and post-modification outstanding amortized cost of loans modified as TDRs were not materially different.

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)3 Months Ended
Mar. 31, 2021
Other Real Estate [Abstract]
Changes in other real estate ownedThe following table explains changes in other real estate owned (“OREO”) during the three months ended March 31, 2021 and 2020: (Dollars in thousands) OREO Balance at December 31, 2020 $ 50,890 Additions 7,106 Sales (8,102) Write-downs/losses (1,382) Balance at March 31, 2021 $ 48,512 Balance at December 31, 2019 $ 46,591 Additions 5,987 Acquired in business combinations 9,813 Sales (5,321) Write-downs/losses (1,363) Balance at March 31, 2020 $ 55,707

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)3 Months Ended
Mar. 31, 2021
Mortgage Servicing Rights [Abstract]
Mortgage servicing rightsThe following table presents changes in the servicing asset during the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 18,426 $ 22,963 Servicing rights originated 3,444 1,583 Amortization (2,248) (1,823) Valuation allowance decrease (increase) 3,123 (2,967) Ending balance $ 22,745 $ 19,756
Schedule of Activity in Servicing Asset Valuation AllowanceThe following table presents the activity in the servicing asset valuation allowance for the three months ended March 31, 2021 and 2020: Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 4,365 $ 222 Valuation allowance (decrease) increase (3,123) 2,967 Ending balance $ 1,242 $ 3,189
Mortgage servicing rights economic assumptionsMortgage servicing rights valuations are performed using a pooling methodology where loans with similar risk characteristics are grouped together and evaluated using discounted cash flows to estimate the present value of future earnings. Key economic assumptions used to value mortgage servicing rights were as follows: March 31, 2021 December 31, 2020 Discount rate - conventional fixed loans 8.74 % 7.92 % Discount rate - all loans excluding conventional fixed loans 9.74 % 8.92 % Weighted average constant prepayment rate 16.54 % 20.62 % Weighted average cost to service a loan $ 87.58 $ 87.58

FDIC Shared-Loss Payable (Table

FDIC Shared-Loss Payable (Tables)3 Months Ended
Mar. 31, 2021
FDIC Shared-Loss Receivable [Abstract]
Changes In Payable to FDICThe following table provides changes in the FDIC shared-loss payable since December 31, 2020: (Dollars in thousands) Total Balance at December 31, 2020 $ 15,601 Accretion 502 Payment made to the FDIC to settle shared-loss agreement (16,103) Balance at March 31, 2021 $ —

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)3 Months Ended
Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss)Accumulated other comprehensive (loss) income included the following as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (Dollars in thousands) Accumulated Deferred Accumulated Accumulated Deferred Accumulated Unrealized gains on securities available for sale $ 36,570 $ 8,411 $ 28,159 $ 102,278 $ 23,524 $ 78,754 Unrealized gains on securities available for sale transferred from (to) held to maturity 4,924 1,133 3,791 5,399 1,242 4,157 Defined benefit pension items (85,222) (19,601) (65,621) (91,751) (21,103) (70,648) Total $ (43,728) $ (10,057) $ (33,671) $ 15,926 $ 3,663 $ 12,263 The following table highlights changes in accumulated other comprehensive (loss) income by component for the three months ended March 31, 2021 and 2020: Three months ended March 31, 2021 (Dollars in thousands, net of tax) Unrealized gains on securities available for sale Unrealized gains on securities available for sale transferred to held to maturity Defined benefit pension items Total Beginning balance $ 78,754 $ 4,157 $ (70,648) $ 12,263 Net unrealized losses arising during period (43,506) — — (43,506) Amounts reclassified from accumulated other comprehensive income (7,089) (366) 5,027 (2,428) Net current period other comprehensive (loss) income (50,595) (366) 5,027 (45,934) Ending balance $ 28,159 $ 3,791 $ (65,621) $ (33,671) Three months ended March 31, 2020 (Dollars in thousands, net of tax) Unrealized gains on securities available for sale Unrealized gains on securities available for sale transferred to held to maturity Defined benefit pension items Total Beginning balance $ 5,792 $ — $ (132,515) $ (126,723) Net unrealized gains arising during period 111,530 — — 111,530 Amounts reclassified from accumulated other comprehensive loss (15,242) — 4,823 (10,419) Net current period other comprehensive income 96,288 — 4,823 101,111 Ending balance $ 102,080 $ — $ (127,692) $ (25,612)
Reclassification out of Accumulated Other Comprehensive IncomeThe following table presents the amounts reclassified from accumulated other comprehensive (loss) income and the line item affected in the statement where net income is presented for the three and three months ended March 31, 2021 and 2020: (Dollars in thousands) Three months ended March 31, 2021 Details about accumulated other comprehensive income (loss) Amounts reclassified from accumulated other comprehensive income (loss) Affected line item in the statement where net income is presented Unrealized gains on securities available for sale $ 9,207 Realized gains on investment securities available for sale, net (2,118) Income taxes $ 7,089 Accretion of unrealized gains on securities available for sale transferred to held to maturity $ 475 Net interest income (109) Income taxes $ 366 Amortization of defined benefit pension actuarial losses (6,529) Other noninterest expense 1,502 Income taxes $ (5,027) Total reclassifications for the period $ 2,428 (Dollars in thousands) Three months ended March 31, 2020 Details about accumulated other comprehensive income (loss) Amounts reclassified from accumulated other comprehensive income (loss) Affected line item in the statement where net income is presented Unrealized gains on securities available for sale $ 19,795 Realized gains on investment securities available for sale, net (4,553) Income taxes $ 15,242 Amortization of defined benefit pension actuarial losses (6,264) Other noninterest expense 1,441 Income taxes $ (4,823) Total reclassifications for the period $ 10,419

Estimated Fair Values (Tables)

Estimated Fair Values (Tables)3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]
Estimated Fair Values For Certain Financial Assets And Financial LiabilitiesThe table presents the carrying values and estimated fair values for financial instruments as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Carrying value Fair value Carrying value Fair value Assets Cash and due from banks $ 410,495 $ 410,495 $ 362,048 $ 362,048 Overnight investments 7,588,757 7,588,757 4,347,336 4,347,336 Investment in marketable equity securities 106,886 106,886 91,680 91,680 Investment securities available for sale 7,307,122 7,307,122 7,014,243 7,014,243 Investment securities held to maturity 2,808,099 2,774,982 2,816,982 2,838,499 Loans held for sale 129,334 129,334 124,837 124,837 Net loans and leases 32,970,200 33,202,437 32,567,661 33,298,166 Income earned not collected 148,022 148,022 145,694 145,694 Federal Home Loan Bank stock 40,563 40,563 45,392 45,392 Mortgage and other servicing rights 23,728 24,322 19,628 20,283 Liabilities Deposits with no stated maturity 44,601,552 44,601,552 40,542,596 40,542,596 Time deposits 2,729,445 2,738,244 2,889,013 2,905,577 Securities sold under customer repurchase agreements 680,705 680,705 641,487 641,487 Federal Home Loan Bank borrowings 648,671 664,996 655,175 677,579 Subordinated debt 497,153 517,091 504,518 525,610 Other borrowings 84,502 85,067 88,470 89,263 FDIC shared-loss payable — — 15,601 15,843 Accrued interest payable 5,149 5,149 9,414 9,414
Assets And Liabilities Carried At Fair Value On A Recurring BasisFor assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of March 31, 2021 and December 31, 2020: March 31, 2021 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale Government agency $ 846,686 $ — $ 846,686 $ — Residential mortgage-backed securities 4,758,589 — 4,758,589 — Commercial mortgage-backed securities 1,098,987 — 1,098,987 — Corporate bonds 602,860 — 284,744 318,116 Total investment securities available for sale $ 7,307,122 $ — $ 6,989,006 $ 318,116 Marketable equity securities $ 106,886 $ 43,677 $ 63,209 $ — Loans held for sale $ 129,334 $ — $ 129,334 $ — December 31, 2020 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 499,933 $ — $ 499,933 $ — Government agency 701,391 — 701,391 — Residential mortgage-backed securities 4,438,103 — 4,438,103 — Commercial mortgage-backed securities 771,537 — 771,537 — Corporate bonds 603,279 — 286,655 316,624 Total investment securities available for sale $ 7,014,243 $ — $ 6,697,619 $ 316,624 Marketable equity securities $ 91,680 $ 32,855 $ 58,825 $ — Loans held for sale $ 124,837 $ — $ 124,837 $ —
Fair Value of Liabilities Measured on Recurring Basis, Unobservable Input ReconciliationThe following tables summarize activity for Level 3 assets: Corporate bonds Three months ended March 31 (Dollars in thousands) 2021 2020 Beginning balance $ 316,624 $ 69,685 Unrealized net losses (gains) included in other comprehensive income 2,333 (4,366) Amounts included in net income (91) (85) Transfers in — 1,782 Sales / Calls (750) — Ending balance $ 318,116 $ 67,016
Fair Value Level 3 Significant Unobservable Input Assumptions(Dollars in thousands) March 31, 2021 Level 3 assets Valuation technique Significant unobservable input Fair Value Corporate bonds Indicative bid provided by broker Multiple factors, including but not limited to, current operations, financial condition, cash flows, and recently executed financing transactions related to the issuer $ 318,116
Fair Value OptionThe following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for residential real estate originated for sale measured at fair value as of March 31, 2021 and December 31, 2020: March 31, 2021 (Dollars in thousands) Fair value Aggregate unpaid principal balance Difference Originated loans held for sale $ 129,334 $ 126,113 $ 3,221 December 31, 2020 Fair value Aggregate unpaid principal balance Difference Originated loans held for sale $ 124,837 $ 118,902 $ 5,935 No originated loans held for sale were 90 or more days past due or on nonaccrual status as of March 31, 2021 or December 31, 2020. We may be required to measure certain financial assets at fair value on a nonrecurring basis. These adjustments to fair value usually result from the application of lower of amortized cost or fair value accounting or write-downs of individual assets due to impairment. The population of loans measured at fair value on a non-recurring basis is limited to collateral-dependent loans evaluated individually. These collateral-dependent loans are deemed to be at fair value if there is an associated ACL or if a charge-off has been recorded in the previous 12 months. Collateral values are determined using appraisals or other third-party value estimates of the subject property discounted based on estimated selling costs, generally between 6% and 10%, and immaterial adjustments for other external factors that may impact the marketability of the collateral. The weighted average discount for estimated selling costs applied was 6.81%.
Assets And Liabilities Carried At Fair Value On A Nonrecurring BasisFor financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of March 31, 2021 and December 31, 2020: March 31, 2021 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Collateral-dependent loans $ 10,247 $ — $ — $ 10,247 Other real estate owned 36,642 — — 36,642 Mortgage servicing rights 20,409 — — 20,409 December 31, 2020 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Collateral-dependent loans $ 11,779 $ — $ — $ 11,779 Other real estate owned 40,115 — — 40,115 Mortgage servicing rights 16,966 — — 16,966

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)3 Months Ended
Mar. 31, 2021
Retirement Benefits, Description [Abstract]
Schedule of Net Benefit CostsFor the three months ended March 31, 2021 and 2020, the components of net periodic benefit cost are as follows: Three months ended March 31 (Dollars in thousands) 2021 2020 Service cost $ 3,653 $ 3,457 Interest cost 7,404 8,531 Expected return on assets (19,595) (16,409) Amortization of net actuarial loss 6,529 6,264 Net periodic (benefit) cost $ (2,009) $ 1,843

Leases (Tables)

Leases (Tables)3 Months Ended
Mar. 31, 2021
Leases [Abstract]
Schedule of Operating and Finance Lease Assets and LiabilitiesThe following table presents right-of-use lease assets and liabilities as of March 31, 2021 and December 31, 2020: (Dollars in thousands) Classification March 31, 2021 December 31, 2020 Assets: Operating Other assets $ 65,330 $ 68,048 Finance Premises and equipment 5,936 6,478 Total leased assets $ 71,266 $ 74,526 Liabilities: Operating Other liabilities $ 65,841 $ 68,343 Finance Other borrowings 5,915 6,308 Total lease liabilities $ 71,756 $ 74,651

Commitments and Contingencies (

Commitments and Contingencies (Tables)3 Months Ended
Mar. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Schedule of fair falue for off-balance sheet risksThe following table presents the commitments to extend credit and standby letters of credit as of March 31, 2021 and December 31, 2020: (Dollars in thousands) March 31, 2021 December 31, 2020 Unused commitments to extend credit $ 12,126,186 $ 12,098,417 Standby letters of credit 139,572 129,819

Accounting Policies and Basis_3

Accounting Policies and Basis of Presentation Accounting Policies and Basis of Presentation (Recently Adopted Accounting Standards) (Details) $ / shares in Units, $ in Thousands3 Months Ended
Mar. 31, 2021USD ($)loan$ / sharessharesMar. 31, 2020USD ($)$ / sharessharesDec. 31, 2020USD ($)$ / sharesDec. 31, 2019USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock issued (in shares) | shares339,958,000
Preferred stock, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01
Stock repurchased during period (in shares) | shares349,390
Stock repurchased during period $ 159,700
Stock repurchased during period (in USD per share) | $ / shares $ 457.10
Forecast period (years)2 years
Retained earnings $ 4,005,318 $ 3,867,252
Allowance for credit loss210,651 $ 209,259 224,314 $ 225,141
Commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit loss74,864 72,410 80,842 $ 142,369
Loans and leases, not acquired in a transfer accounted for as debt securities $ 23,097,302 22,558,060
SBA-PPP
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of loans originated | loan9,600
Loans receivable, period increase $ 1,100,000
Loans and leases, not acquired in a transfer accounted for as debt securities2,800,000
SBA-PPP | Commercial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and leases, not acquired in a transfer accounted for as debt securities $ 2,769,906 $ 2,406,291
Class A Common Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock repurchased during period $ 159,704
Class A Common Stock | Repurchases From Ella Ann Holding
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stock repurchased during period (in shares) | shares45,000

Business Combinations - Merger

Business Combinations - Merger (Details)Oct. 15, 2020director$ / sharesMar. 31, 2021$ / sharesDec. 31, 2020$ / shares
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Number of directors | director14
Class A Common Stock
Subsequent Event [Line Items]
Common stock, par value (in dollars per share) $ 1 $ 1 $ 1
CIT Group Inc.
Subsequent Event [Line Items]
Common stock, par value (in dollars per share) $ 0.01
Number of directors | director3
CIT Group Inc. | Ellen R. Alemany [Member]
Subsequent Event [Line Items]
Number of directors | director1
CIT Group Inc. | BancShares Class A Common Stock
Subsequent Event [Line Items]
Conversion rate0.06200
CIT Group Inc. | Fixed-To-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share) $ 0.01
CIT Group Inc. | Non-Cumulative Perpetual Preferred Stock, Series B
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share) $ 0.01
Dividend rate (percentage)5.625%
CIT Group Inc. | Series B Preferred Stock
Subsequent Event [Line Items]
Conversion rate1
CIT Group Inc. | Series C Preferred Stock
Subsequent Event [Line Items]
Conversion rate1
BancShares
Subsequent Event [Line Items]
Number of directors | director11

Investments (Aggregate Values a

Investments (Aggregate Values and Unrealized Gains and Losses) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Investment securities available for sale
Amortized cost $ 7,270,552 $ 6,911,965
Gross unrealized losses44,888 8,911
Fair value7,307,122 7,014,243
Investment in marketable equity securities at cost84,297 84,837
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax22,872 8,654
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax283 1,811
Fair value106,886 91,680
Investment securities held to maturity
Amortized cost2,808,099 2,816,982
Gross unrealized gains5,204
Gross unrealized losses38,321
Fair value2,774,982 2,838,499
Amortized cost10,162,948 9,813,784
Gross unrealized gains109,534 141,416
Gross unrealized losses83,492 10,778
Fair value10,188,990 9,944,422
Investment securities available for sale at cost7,270,552 6,911,965
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax81,458 111,189
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax44,888 8,911
Debt Securities, Available-for-sale7,307,122 7,014,243
Interest receivable, available-for-sale debt securities21,300 17,600
Interest receivable, held-to-maturity debt securities5,300 5,400
U.S. Treasury
Investment securities held to maturity
Investment securities available for sale at cost499,832
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax101
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax0
Debt Securities, Available-for-sale499,933
Government agency
Investment securities available for sale
Gross unrealized losses6,403 5,573
Investment securities held to maturity
Investment securities available for sale at cost852,305 706,241
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax784 723
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax6,403 5,573
Debt Securities, Available-for-sale846,686 701,391
Residential Mortgage Backed Securities
Investment securities available for sale
Gross unrealized losses26,046 1,310
Investment securities held to maturity
Amortized cost1,740,314 1,877,692
Gross unrealized gains5,191 17,689
Gross unrealized losses20,510 0
Fair value1,724,995 1,895,381
Investment securities available for sale at cost4,736,893 4,369,130
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax47,742 70,283
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax26,046 1,310
Debt Securities, Available-for-sale4,758,589 4,438,103
Commercial Mortgage Backed Securities
Investment securities available for sale
Amortized cost1,096,259 745,892
Gross unrealized gains14,619 25,645
Gross unrealized losses11,891 0
Fair value1,098,987 771,537
Investment securities held to maturity
Amortized cost1,065,778 937,034
Gross unrealized gains13 3,884
Gross unrealized losses17,811 56
Fair value1,047,980 940,862
Residential mortgage-backed securities
Investment securities held to maturity
Amortized cost2,816,982
Gross unrealized gains21,573
Gross unrealized losses56
Fair value2,838,499
Commercial mortgage-backed securities
Investment securities available for sale
Gross unrealized losses548
Investment securities held to maturity
Investment securities available for sale at cost585,095 590,870
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax18,313 14,437
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax548 2,028
Debt Securities, Available-for-sale602,860 603,279
Other
Investment securities held to maturity
Amortized cost2,007 2,256
Gross unrealized gains0 0
Gross unrealized losses0 0
Fair value $ 2,007 $ 2,256

Investments (Maturity Informati

Investments (Maturity Information) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Investment securities available for sale
Total investment securities available for sale, cost $ 7,270,552 $ 6,911,965
Total investment securities available for sale, fair value7,307,122 7,014,243
Investment securities held to maturity
Investment securities held to maturity at cost2,808,099 2,816,982
Investment securities held to maturity at fair value2,774,982 2,838,499
Investment securities available for sale at cost7,270,552 6,911,965
Debt Securities, Available-for-sale7,307,122 7,014,243
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost998 1,507
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value998 1,507
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost1,009 749
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value1,009 749
Debt Securities
Investment securities available for sale
Maturing in one year or less, cost1,020 500,846
Maturing in one through five years, cost72,340 72,565
Maturing in five through ten years, cost502,757 508,320
Maturing in over ten years, cost8,978 8,971
Maturing in one year or less, fair value1,021 500,954
Maturing in one through five years, fair value74,536 73,881
Maturing in five through ten yeas, fair value517,922 519,570
Maturing in over ten years, fair value9,381 8,807
Agency Securities
Investment securities held to maturity
Investment securities available for sale at cost852,305 706,241
Debt Securities, Available-for-sale846,686 701,391
Residential Mortgage Backed Securities
Investment securities held to maturity
Investment securities held to maturity at cost1,740,314 1,877,692
Commercial mortgage-backed securities1,724,995 1,895,381
Investment securities held to maturity at fair value1,724,995 1,895,381
Investment securities available for sale at cost4,736,893 4,369,130
Debt Securities, Available-for-sale4,758,589 4,438,103
Commercial Mortgage Backed Securities
Investment securities available for sale
Total investment securities available for sale, cost1,096,259 745,892
Total investment securities available for sale, fair value1,098,987 771,537
Investment securities held to maturity
Investment securities held to maturity at cost1,065,778 937,034
Commercial mortgage-backed securities1,047,980 940,862
Investment securities held to maturity at fair value $ 1,047,980 940,862
Residential mortgage-backed securities
Investment securities held to maturity
Investment securities held to maturity at cost2,816,982
Investment securities held to maturity at fair value $ 2,838,499

Investments (Available-for-sale

Investments (Available-for-sale Securities) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on sales of investment securities available for sale $ 9,207 $ 20,474
Gross realized losses on sales of investment securities available for sale0 (679)
Net realized gains on sales of investment securities available for sale $ 9,207 $ 19,795

Investments Marketable Equity S

Investments Marketable Equity Securities Gains (Losses) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Marketable Equity Securities Gains (Losses) [Abstract]
Marketable equity securities gains (losses), net $ 16,011 $ (51,408)
Less net gains recognized on marketable equity securities sold263 323
Unrealized gains (losses) recognized on marketable equity securities held $ 15,748 $ (51,731)

Investments (Unrealized Losses)

Investments (Unrealized Losses) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Investment securities available for sale:
Fair Value, Less than 12 months $ 3,370,304 $ 760,153
Unrealized Losses, Less than 12 months41,407 6,466
Fair Value, 12 months or more454,057 351,841
Unrealized Losses, Greater than 12 months3,481 2,445
Fair Value, Total3,824,361 1,111,994
Gross unrealized losses44,888 8,911
Agency Securities
Investment securities available for sale:
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months331,034 268,622
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss3,501 3,197
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer415,379 328,777
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss2,902 2,376
Fair Value, Total746,413 597,399
Gross unrealized losses6,403 5,573
Residential Mortgage Backed Securities
Investment securities available for sale:
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months2,345,301 433,816
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss26,001 1,241
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer12,495 23,064
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss45 69
Fair Value, Total2,357,796 456,880
Gross unrealized losses26,046 1,310
Commercial Mortgage Backed Securities
Investment securities available for sale:
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months685,575
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss11,891
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss0
Fair Value, Total685,575
Gross unrealized losses11,891 0
Corporate bonds
Investment securities available for sale:
Fair Value, Total57,715
Gross unrealized losses2,028
Corporate Bonds
Investment securities available for sale:
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months8,394 57,715
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss14 2,028
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer26,183 0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss534 $ 0
Fair Value, Total34,577
Gross unrealized losses $ 548

Investments (Narrative) (Detail

Investments (Narrative) (Details) shares in ThousandsNov. 01, 2020USD ($)Mar. 31, 2021USD ($)investmentsinvestmentsharesMar. 31, 2020USD ($)Dec. 31, 2020USD ($)
Schedule of Investments [Line Items]
Unrealized gain at the date of transfer $ 5,900,000
Other Comprehensive Income Loss Unrealized Losses On Securities Available For Sale Transferred To Held To Maturity Arising During Period Net Of Tax4,500,000 $ (366,000) $ 0
Stock issued by Federal Home Loan Bank40,600,000 $ 45,400,000
Non-marketable equity securities11,400,000 11,600,000
Available for sale securities, realized gain (loss) $ 9,207,000 $ 19,795,000
Available-for-sale securities, continuous unrealized loss position, 12 months or longer, number of positions | investment60
Unrealized losses related to marketability of securities or issuer's ability to honor redemption obligations $ 0
Investment value deemed to be OTTI0
Investment securities, aggregate carrying value, pledged as collateral4,800,000,000 $ 4,600,000,000
Debt Securities, Accrued Interest, WriteOff0
Held-to-maturity securities0
Past due securities $ 0
Residential mortgage-backed securities
Schedule of Investments [Line Items]
Investment securities available for sale transferred to held to maturity amortized cost1,460,000,000
Investment securities available for sale transferred to held to maturity fair value $ 1,470,000,000
Weighted average contractual maturity term18 years
Available-for-sale, securities in unrealized loss positions, number of positions, greater than or equal to one year | investments54
Corporate Bonds
Schedule of Investments [Line Items]
Available-for-sale, securities in unrealized loss positions, number of positions, greater than or equal to one year | investments6
Visa Class B Common Stock
Schedule of Investments [Line Items]
Investment owned (in shares) | shares354
Investment owned $ 0

Loans and Leases (Loans and Lea

Loans and Leases (Loans and Leases Outstanding) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
PCD loans $ 432,773 $ 462,882
Total loans and leases33,180,851 32,791,975
SBA-PPP
Loans and leases, not acquired in a transfer accounted for as debt securities2,800,000
Commercial
Loans and leases, not acquired in a transfer accounted for as debt securities23,097,302 22,558,060
Commercial | Construction and land development
Loans and leases, not acquired in a transfer accounted for as debt securities1,022,087 985,424
Commercial | Owner occupied commercial mortgage
Loans and leases, not acquired in a transfer accounted for as debt securities11,340,966 11,165,012
Commercial | Non-owner occupied commercial mortgage
Loans and leases, not acquired in a transfer accounted for as debt securities3,017,898 2,987,689
Commercial | Commercial and industrial and leases
Loans and leases, not acquired in a transfer accounted for as debt securities4,946,445 5,013,644
Commercial | SBA-PPP
Loans and leases, not acquired in a transfer accounted for as debt securities2,769,906 2,406,291
Consumer
Loans and leases, not acquired in a transfer accounted for as debt securities9,650,776 9,771,033
Consumer | Construction and land development
Loans and leases, not acquired in a transfer accounted for as debt securities336,065 348,123
Consumer | Consumer auto
Loans and leases, not acquired in a transfer accounted for as debt securities1,271,586 1,255,402
Consumer | Residential mortgage
Loans and leases, not acquired in a transfer accounted for as debt securities5,566,026 5,561,686
Consumer | Revolving mortgage
Loans and leases, not acquired in a transfer accounted for as debt securities1,938,422 2,052,854
Consumer | Consumer other
Loans and leases, not acquired in a transfer accounted for as debt securities $ 538,677 $ 552,968

Loans and Leases (Narrative) (D

Loans and Leases (Narrative) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Interest receivable $ 103,200 $ 107,700
Loans held for sale129,300 124,800
total remaining discount58,150 64,727
PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Remaining discount41,141 45,254
Non-PCI Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums78,649 50,217
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Purchase Discount Remaining17,009 19,473
Non-PCI Loans | SBA-PPP
Financing Receivable, Credit Quality Indicator [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums(66,717)41,064
Non-PCI Loans | Other Portfolio
Financing Receivable, Credit Quality Indicator [Line Items]
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums $ (11,932) $ 9,153

Loans and Leases (Aging Of The

Loans and Leases (Aging Of The Outstanding Loans and Leases By Class) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Past due loans $ 215,919 $ 245,485
Current loans32,964,932 32,546,490
Total loans and leases33,180,851 32,791,975
Commercial
Financing Receivable, Past Due [Line Items]
Total loans and leases23,097,302 22,558,060
Commercial | Construction and land development
Financing Receivable, Past Due [Line Items]
Total loans and leases1,022,087 985,424
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total loans and leases4,946,445 5,013,644
Consumer
Financing Receivable, Past Due [Line Items]
Total loans and leases9,650,776 9,771,033
Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Total loans and leases336,065 348,123
Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Total loans and leases1,271,586 1,255,402
Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases5,566,026 5,561,686
Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases1,938,422 2,052,854
Non-PCI Loans | Commercial
Financing Receivable, Past Due [Line Items]
Past due loans67,117
Current loans22,490,943
Total loans and leases22,558,060
Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans1,872 3,086
Current loans1,020,215 982,338
Total loans and leases1,022,087 985,424
Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Past Due [Line Items]
Past due loans27,177 25,071
Current loans11,313,789 11,139,941
Total loans and leases11,340,966 11,165,012
Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Past Due [Line Items]
Past due loans14,266 18,343
Current loans3,003,632 2,969,346
Total loans and leases3,017,898 2,987,689
Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due loans21,304 20,617
Current loans4,925,141 4,993,027
Total loans and leases4,946,445 5,013,644
Non-PCI Loans | Commercial | Total commercial loans
Financing Receivable, Past Due [Line Items]
Past due loans64,619 0
Current loans23,032,683 2,406,291
Total loans and leases23,097,302 2,406,291
Non-PCI Loans | Commercial | SBA-PPP
Financing Receivable, Past Due [Line Items]
Past due loans0
Current loans2,769,906
Total loans and leases2,769,906
Non-PCI Loans | Consumer
Financing Receivable, Past Due [Line Items]
Past due loans102,034 122,944
Current loans9,548,742 9,648,089
Total loans and leases9,650,776 9,771,033
Non-PCI Loans | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans1,862 1,339
Current loans334,203 346,784
Total loans and leases336,065 348,123
Non-PCI Loans | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Past due loans6,306 9,736
Current loans1,265,280 1,245,666
Total loans and leases1,271,586 1,255,402
Non-PCI Loans | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Past due loans72,535 83,272
Current loans5,493,491 5,478,414
Total loans and leases5,566,026 5,561,686
Non-PCI Loans | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Past due loans16,356 22,018
Current loans1,922,066 2,030,836
Total loans and leases1,938,422 2,052,854
Non-PCI Loans | Consumer | Consumer other
Financing Receivable, Past Due [Line Items]
Past due loans4,975 6,579
Current loans533,702 546,389
Total loans and leases538,677 552,968
PCD Loans
Financing Receivable, Past Due [Line Items]
Past due loans49,266 55,424
Current loans383,507 407,458
Total loans and leases432,773 462,882
30 to 59 Days past due
Financing Receivable, Past Due [Line Items]
Past due loans90,526 121,499
30 to 59 Days past due | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Total loans and leases266 932
30 to 59 Days past due | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Total loans and leases4,432 6,825
30 to 59 Days past due | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases34,350 43,218
30 to 59 Days past due | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases6,222 11,977
30 to 59 Days past due | Non-PCI Loans | Commercial
Financing Receivable, Past Due [Line Items]
Past due loans36,615
30 to 59 Days past due | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans277 956
30 to 59 Days past due | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Past Due [Line Items]
Past due loans13,153 8,757
30 to 59 Days past due | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Past Due [Line Items]
Past due loans5,046 12,370
30 to 59 Days past due | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due loans13,284 14,532
30 to 59 Days past due | Non-PCI Loans | Commercial | Total commercial loans
Financing Receivable, Past Due [Line Items]
Past due loans31,760 0
30 to 59 Days past due | Non-PCI Loans | Commercial | SBA-PPP
Financing Receivable, Past Due [Line Items]
Past due loans0
30 to 59 Days past due | Non-PCI Loans | Consumer
Financing Receivable, Past Due [Line Items]
Past due loans47,516 66,562
30 to 59 Days past due | Non-PCI Loans | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans266 932
30 to 59 Days past due | Non-PCI Loans | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Past due loans4,432 6,825
30 to 59 Days past due | Non-PCI Loans | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Past due loans34,350 43,218
30 to 59 Days past due | Non-PCI Loans | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Past due loans6,222 11,977
30 to 59 Days past due | Non-PCI Loans | Consumer | Consumer other
Financing Receivable, Past Due [Line Items]
Past due loans2,246 3,610
30 to 59 Days past due | PCD Loans
Financing Receivable, Past Due [Line Items]
Past due loans11,250 18,322
Total loans and leases11,250 18,322
60 to 89 Days past due
Financing Receivable, Past Due [Line Items]
Past due loans24,562 26,043
60 to 89 Days past due | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Total loans and leases944 77
60 to 89 Days past due | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Total loans and leases1,014 1,835
60 to 89 Days past due | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases7,396 8,364
60 to 89 Days past due | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases1,603 2,626
60 to 89 Days past due | Non-PCI Loans | Commercial
Financing Receivable, Past Due [Line Items]
Past due loans5,601
60 to 89 Days past due | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans0 527
60 to 89 Days past due | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Past Due [Line Items]
Past due loans2,996 2,232
60 to 89 Days past due | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Past Due [Line Items]
Past due loans303 0
60 to 89 Days past due | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due loans4,771 2,842
60 to 89 Days past due | Non-PCI Loans | Commercial | Total commercial loans
Financing Receivable, Past Due [Line Items]
Past due loans8,070 0
60 to 89 Days past due | Non-PCI Loans | Commercial | SBA-PPP
Financing Receivable, Past Due [Line Items]
Past due loans0
60 to 89 Days past due | Non-PCI Loans | Consumer
Financing Receivable, Past Due [Line Items]
Past due loans12,170 14,366
60 to 89 Days past due | Non-PCI Loans | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans944 77
60 to 89 Days past due | Non-PCI Loans | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Past due loans1,014 1,835
60 to 89 Days past due | Non-PCI Loans | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Past due loans7,396 8,364
60 to 89 Days past due | Non-PCI Loans | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Past due loans1,603 2,626
60 to 89 Days past due | Non-PCI Loans | Consumer | Consumer other
Financing Receivable, Past Due [Line Items]
Past due loans1,213 1,464
60 to 89 Days past due | PCD Loans
Financing Receivable, Past Due [Line Items]
Past due loans4,322 6,076
Total loans and leases4,322 6,076
90 Days or greater
Financing Receivable, Past Due [Line Items]
Past due loans100,831 97,943
90 Days or greater | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Total loans and leases652 330
90 Days or greater | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Total loans and leases860 1,076
90 Days or greater | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases30,789 31,690
90 Days or greater | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Total loans and leases8,531 7,415
90 Days or greater | Non-PCI Loans | Commercial
Financing Receivable, Past Due [Line Items]
Past due loans24,901
90 Days or greater | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans1,595 1,603
90 Days or greater | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Past Due [Line Items]
Past due loans11,028 14,082
90 Days or greater | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Past Due [Line Items]
Past due loans8,917 5,973
90 Days or greater | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due loans3,249 3,243
90 Days or greater | Non-PCI Loans | Commercial | Total commercial loans
Financing Receivable, Past Due [Line Items]
Past due loans24,789 0
90 Days or greater | Non-PCI Loans | Commercial | SBA-PPP
Financing Receivable, Past Due [Line Items]
Past due loans0
90 Days or greater | Non-PCI Loans | Consumer
Financing Receivable, Past Due [Line Items]
Past due loans42,348 42,016
90 Days or greater | Non-PCI Loans | Consumer | Construction and land development
Financing Receivable, Past Due [Line Items]
Past due loans652 330
90 Days or greater | Non-PCI Loans | Consumer | Consumer auto
Financing Receivable, Past Due [Line Items]
Past due loans860 1,076
90 Days or greater | Non-PCI Loans | Consumer | Residential mortgage
Financing Receivable, Past Due [Line Items]
Past due loans30,789 31,690
90 Days or greater | Non-PCI Loans | Consumer | Revolving mortgage
Financing Receivable, Past Due [Line Items]
Past due loans8,531 7,415
90 Days or greater | Non-PCI Loans | Consumer | Consumer other
Financing Receivable, Past Due [Line Items]
Past due loans1,516 1,505
90 Days or greater | PCD Loans
Financing Receivable, Past Due [Line Items]
Past due loans33,694 31,026
Total loans and leases $ 33,694 $ 31,026

Loans and Leases (Recorded Inve

Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing $ 194,534 $ 191,483
Loans and leases greater than 90 days and accruing7,377 5,862
Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing51,101 43,322
Loans and leases greater than 90 days and accruing4,218 4,312
Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing1,648 1,661
Loans and leases greater than 90 days and accruing0 0
Non-PCI Loans | Commercial | Owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing22,796 23,103
Loans and leases greater than 90 days and accruing1,400 3,625
Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing10,939 7,932
Loans and leases greater than 90 days and accruing2,211 147
Non-PCI Loans | Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing15,718 10,626
Loans and leases greater than 90 days and accruing607 540
Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing90,268 93,222
Loans and leases greater than 90 days and accruing1,727 1,195
Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing566 652
Loans and leases greater than 90 days and accruing543 0
Non-PCI Loans | Consumer | Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing61,907 66,345
Loans and leases greater than 90 days and accruing29 0
Non-PCI Loans | Consumer | Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing23,952 22,236
Loans and leases greater than 90 days and accruing0 0
Non-PCI Loans | Consumer | Consumer auto
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing3,027 3,166
Loans and leases greater than 90 days and accruing0 0
Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing816 823
Loans and leases greater than 90 days and accruing1,155 1,195
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing53,165 54,939
Loans and leases greater than 90 days and accruing $ 1,432 $ 355

Loans and Leases Loans and Leas

Loans and Leases Loans and Leases (Credit Rating) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total loans and leases $ 33,180,851 $ 32,791,975
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
20212,207,869 8,459,531
20207,728,147 4,217,219
20194,060,239 2,787,346
20182,552,670 2,053,335
20171,890,073 1,647,878
Prior3,510,422 2,238,335
Revolving1,140,955 1,147,519
Revolving converted to term loans6,927 6,897
Total loans and leases23,097,302 22,558,060
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021740,559 2,679,097
20202,555,865 1,444,947
20191,271,931 929,030
2018791,020 728,918
2017629,500 536,569
Prior1,297,619 951,150
Revolving2,206,721 2,339,505
Revolving converted to term loans157,561 161,817
Total loans and leases9,650,776 9,771,033
Consumer And PCD Portfolio Segments
Financing Receivable, Credit Quality Indicator [Line Items]
20212,948,428 11,172,270
202010,313,757 5,690,922
20195,359,399 3,749,427
20183,375,272 2,812,829
20172,546,743 2,215,777
Prior5,091,470 3,458,369
Revolving3,359,588 3,500,512
Revolving converted to term loans186,194 191,869
Total loans and leases33,180,851 32,791,975
Construction and land development | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
202146,039 342,658
2020399,629 341,862
2019311,343 198,300
2018170,162 56,118
201753,344 23,977
Prior28,877 11,387
Revolving12,693 11,122
Revolving converted to term loans0 0
Total loans and leases1,022,087 985,424
Construction and land development | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
202146,039 342,183
2020399,172 341,233
2019310,753 190,429
2018168,534 50,776
201748,089 23,969
Prior28,797 11,306
Revolving12,548 10,969
Revolving converted to term loans0 0
Total loans and leases1,013,932 970,865
Construction and land development | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
20210 246
2020232 0
20190 6,421
2018181 5,342
201785 0
Prior0 0
Revolving145 153
Revolving converted to term loans0 0
Total loans and leases643 12,162
Construction and land development | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
20210 229
2020225 629
2019590 1,450
20181,447 0
20175,170 8
Prior80 81
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases7,512 2,397
Construction and land development | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
202140,360 215,112
2020210,592 86,127
201952,559 24,981
201817,003 10,648
20178,492 6,093
Prior5,484 2,637
Revolving1,575 2,525
Revolving converted to term loans0 0
Total loans and leases336,065 348,123
Owner occupied commercial mortgage | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2021636,490 3,200,021
20203,222,562 2,240,919
20192,210,881 1,671,722
20181,571,041 1,334,727
20171,245,547 1,081,293
Prior2,336,723 1,521,016
Revolving117,549 115,109
Revolving converted to term loans173 205
Total loans and leases11,340,966 11,165,012
Owner occupied commercial mortgage | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021632,239 3,183,467
20203,202,842 2,201,165
20192,166,465 1,625,141
20181,521,886 1,301,412
20171,206,771 1,049,858
Prior2,249,426 1,454,020
Revolving106,579 101,556
Revolving converted to term loans101 133
Total loans and leases11,086,309 10,916,752
Owner occupied commercial mortgage | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021687 6,274
202010,398 20,702
201929,975 36,739
201839,868 12,387
201712,074 17,699
Prior37,441 25,693
Revolving2,974 5,115
Revolving converted to term loans72 72
Total loans and leases133,489 124,681
Owner occupied commercial mortgage | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
20213,564 10,280
20209,322 19,052
201914,441 9,842
20189,287 20,928
201726,702 13,736
Prior49,856 41,303
Revolving7,996 8,438
Revolving converted to term loans0 0
Total loans and leases121,168 123,579
Non-owner occupied commercial mortgage | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2021159,684 868,982
2020822,341 629,426
2019626,447 401,226
2018355,431 342,372
2017329,716 302,018
Prior686,196 410,223
Revolving38,083 33,442
Revolving converted to term loans0 0
Total loans and leases3,017,898 2,987,689
Non-owner occupied commercial mortgage | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021158,815 865,514
2020809,647 609,975
2019603,274 378,136
2018332,010 331,800
2017319,514 282,810
Prior638,882 391,517
Revolving35,835 32,149
Revolving converted to term loans0 0
Total loans and leases2,897,977 2,891,901
Non-owner occupied commercial mortgage | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021794 569
2020676 905
2019880 10,794
201810,778 1,808
20171,440 5,121
Prior2,918 3,279
Revolving500 483
Revolving converted to term loans0 0
Total loans and leases17,986 22,959
Non-owner occupied commercial mortgage | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
202175 2,899
202012,018 18,546
201922,293 12,296
201812,643 8,764
20178,762 14,087
Prior44,396 15,427
Revolving1,748 810
Revolving converted to term loans0 0
Total loans and leases101,935 72,829
Commercial and industrial | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2021429,644 1,641,579
20201,449,721 1,005,012
2019911,568 516,098
2018456,036 320,118
2017261,466 240,590
Prior458,626 295,709
Revolving972,630 987,846
Revolving converted to term loans6,754 6,692
Total loans and leases4,946,445 5,013,644
Commercial and industrial | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021424,035 1,620,622
20201,423,941 983,852
2019884,987 504,463
2018442,129 310,468
2017251,356 234,735
Prior445,265 286,996
Revolving874,664 899,978
Revolving converted to term loans5,150 5,520
Total loans and leases4,751,527 4,846,634
Commercial and industrial | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021102 3,146
202010,601 17,065
201922,183 7,265
20188,335 5,393
20176,160 3,307
Prior7,764 4,912
Revolving11,376 9,152
Revolving converted to term loans194 189
Total loans and leases66,715 50,429
Commercial and industrial | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
20215,507 17,811
202015,179 4,095
20194,398 4,370
20185,572 4,257
20173,950 2,548
Prior5,597 3,801
Revolving24,608 22,384
Revolving converted to term loans1,410 983
Total loans and leases66,221 60,249
Commercial and industrial | Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
20210
20200
20190
20180
20170
Prior0
Revolving2
Revolving converted to term loans0
Total loans and leases2
Commercial and industrial | Commercial | Ungraded
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving61,980 56,332
Revolving converted to term loans0 0
Total loans and leases61,980 56,332
Residential mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021524,216 1,885,273
20201,813,714 987,802
2019892,605 671,657
2018572,764 605,545
2017526,673 476,855
Prior1,211,439 909,361
Revolving24,615 25,193
Revolving converted to term loans0 0
Total loans and leases5,566,026 5,561,686
Revolving mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving1,780,861 1,891,037
Revolving converted to term loans157,561 161,817
Total loans and leases1,938,422 2,052,854
Consumer auto | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021155,101 524,393
2020486,080 343,683
2019303,915 221,383
2018192,579 105,530
201788,088 50,627
Prior45,823 9,786
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases1,271,586 1,255,402
Consumer other | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
202120,882 54,319
202045,479 27,335
201922,852 11,009
20188,674 7,195
20176,247 2,994
Prior34,873 29,366
Revolving399,670 420,750
Revolving converted to term loans0 0
Total loans and leases538,677 552,968
SBA-PPP | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021936,012 2,406,291
20201,833,894 0
20190 0
20180 0
20170 0
Prior0 0
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases2,769,906 2,406,291
PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
20210 33,642
202029,745 28,756
201927,229 33,051
201831,582 30,576
201727,170 31,330
Prior283,429 268,884
Revolving11,912 13,488
Revolving converted to term loans21,706 23,155
Total loans and leases432,773 462,882
Current | Construction and land development | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
202140,360 215,112
2020209,701 85,707
201952,406 24,860
201816,883 10,269
20178,037 6,093
Prior5,241 2,218
Revolving1,575 2,525
Revolving converted to term loans0 0
Total loans and leases334,203 346,784
Current | Residential mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021521,849 1,882,683
20201,810,979 978,298
2019889,902 655,798
2018561,267 596,309
2017518,205 461,719
Prior1,166,958 878,634
Revolving24,331 24,973
Revolving converted to term loans0 0
Total loans and leases5,493,491 5,478,414
Current | Revolving mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving1,772,173 1,879,968
Revolving converted to term loans149,893 150,868
Total loans and leases1,922,066 2,030,836
Current | Consumer auto | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2021155,101 521,719
2020484,026 340,594
2019302,622 219,597
2018191,055 104,280
201787,139 49,872
Prior45,337 9,604
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases1,265,280 1,245,666
Current | Consumer other | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
202120,879 53,842
202045,239 27,117
201922,631 10,911
20188,552 7,159
20176,246 2,980
Prior34,873 29,336
Revolving395,282 415,044
Revolving converted to term loans0 0
Total loans and leases533,702 546,389
Current | PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
20210 31,475
202028,056 25,425
201924,347 27,183
201826,763 27,955
201724,879 28,995
Prior247,606 232,186
Revolving11,788 13,212
Revolving converted to term loans20,068 21,027
Total loans and leases383,507 407,458
30 to 59 Days past due | Construction and land development | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
2020108 420
201915 121
201861 370
201730 0
Prior52 21
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases266 932
30 to 59 Days past due | Residential mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20212,367 2,278
20202,193 4,573
2019236 11,463
20189,619 3,772
20174,113 8,613
Prior15,567 12,299
Revolving255 220
Revolving converted to term loans0 0
Total loans and leases34,350 43,218
30 to 59 Days past due | Revolving mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving3,877 8,241
Revolving converted to term loans2,345 3,736
Total loans and leases6,222 11,977
30 to 59 Days past due | Consumer auto | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 2,175
20201,327 1,873
2019962 1,257
20181,054 842
2017703 544
Prior386 134
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases4,432 6,825
30 to 59 Days past due | Consumer other | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20213 322
2020131 114
2019100 77
2018106 18
20171 11
Prior0 7
Revolving1,905 3,061
Revolving converted to term loans0 0
Total loans and leases2,246 3,610
30 to 59 Days past due | PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
20210 999
2020344 925
2019390 801
2018407 718
2017300 1,341
Prior9,423 12,637
Revolving19 156
Revolving converted to term loans367 745
Total loans and leases11,250 18,322
60 to 89 Days past due | Construction and land development | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
2020240 0
2019138 0
201859 9
2017366 0
Prior141 68
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases944 77
60 to 89 Days past due | Residential mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 30
2020256 100
20191,012 1,246
20181,040 1,449
2017558 834
Prior4,530 4,705
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases7,396 8,364
60 to 89 Days past due | Revolving mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving699 527
Revolving converted to term loans904 2,099
Total loans and leases1,603 2,626
60 to 89 Days past due | Consumer auto | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 329
2020433 689
2019197 312
2018253 351
2017117 109
Prior14 45
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases1,014 1,835
60 to 89 Days past due | Consumer other | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 102
202095 20
20197 13
201810 18
20170 3
Prior0 23
Revolving1,101 1,285
Revolving converted to term loans0 0
Total loans and leases1,213 1,464
60 to 89 Days past due | PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
20210 447
202051 81
201988 312
20180 695
2017165 97
Prior3,896 4,098
Revolving0 9
Revolving converted to term loans122 337
Total loans and leases4,322 6,076
90 Days or greater | Construction and land development | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
2020543 0
20190 0
20180 0
201759 0
Prior50 330
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases652 330
90 Days or greater | Residential mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 282
2020286 4,831
20191,455 3,150
2018838 4,015
20173,797 5,689
Prior24,384 13,723
Revolving29 0
Revolving converted to term loans0 0
Total loans and leases30,789 31,690
90 Days or greater | Revolving mortgage | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 0
20200 0
20190 0
20180 0
20170 0
Prior0 0
Revolving4,112 2,301
Revolving converted to term loans4,419 5,114
Total loans and leases8,531 7,415
90 Days or greater | Consumer auto | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 170
2020294 527
2019134 217
2018217 57
2017129 102
Prior86 3
Revolving0 0
Revolving converted to term loans0 0
Total loans and leases860 1,076
90 Days or greater | Consumer other | Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
20210 53
202014 84
2019114 8
20186 0
20170 0
Prior0 0
Revolving1,382 1,360
Revolving converted to term loans0 0
Total loans and leases1,516 1,505
90 Days or greater | PCD Loans
Financing Receivable, Credit Quality Indicator [Line Items]
20210 721
20201,294 2,325
20192,404 4,755
20184,412 1,208
20171,826 897
Prior22,504 19,963
Revolving105 111
Revolving converted to term loans1,149 1,046
Total loans and leases $ 33,694 $ 31,026

Loans and Leases (Composition o

Loans and Leases (Composition of the Loans and Leases Outstanding By Credit Quality Indicator) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans $ 215,919 $ 245,485
Current loans32,964,932 32,546,490
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans23,097,302 22,558,060
Commercial | Commercial and industrial and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans4,946,445 5,013,644
Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans1,022,087 985,424
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans9,650,776 9,771,033
Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans336,065 348,123
Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans67,117
Current loans22,490,943
Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans27,177 25,071
Current loans11,313,789 11,139,941
Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans14,266 18,343
Current loans3,003,632 2,969,346
Non-PCI Loans | Commercial | Commercial and industrial and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans21,304 20,617
Current loans4,925,141 4,993,027
Non-PCI Loans | Commercial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans64,619 0
Current loans23,032,683 2,406,291
Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans1,872 3,086
Current loans1,020,215 982,338
Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans102,034 122,944
Current loans9,548,742 9,648,089
Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans1,862 1,339
Current loans334,203 346,784
Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans4,975 6,579
Current loans533,702 546,389
PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans49,266 55,424
Current loans383,507 407,458
30 to 59 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans90,526 121,499
30 to 59 Days past due | Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans36,615
30 to 59 Days past due | Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans13,153 8,757
30 to 59 Days past due | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans5,046 12,370
30 to 59 Days past due | Non-PCI Loans | Commercial | Commercial and industrial and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans13,284 14,532
30 to 59 Days past due | Non-PCI Loans | Commercial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans31,760 0
30 to 59 Days past due | Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans277 956
30 to 59 Days past due | Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans47,516 66,562
30 to 59 Days past due | Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans266 932
30 to 59 Days past due | Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans2,246 3,610
30 to 59 Days past due | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans11,250 18,322
60 to 89 Days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans24,562 26,043
60 to 89 Days past due | Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans5,601
60 to 89 Days past due | Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans2,996 2,232
60 to 89 Days past due | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans303 0
60 to 89 Days past due | Non-PCI Loans | Commercial | Commercial and industrial and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans4,771 2,842
60 to 89 Days past due | Non-PCI Loans | Commercial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans8,070 0
60 to 89 Days past due | Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans0 527
60 to 89 Days past due | Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans12,170 14,366
60 to 89 Days past due | Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans944 77
60 to 89 Days past due | Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans1,213 1,464
60 to 89 Days past due | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans4,322 6,076
90 Days or greater
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans100,831 97,943
90 Days or greater | Non-PCI Loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans24,901
90 Days or greater | Non-PCI Loans | Commercial | Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans11,028 14,082
90 Days or greater | Non-PCI Loans | Commercial | Non-owner occupied commercial mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans8,917 5,973
90 Days or greater | Non-PCI Loans | Commercial | Commercial and industrial and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans3,249 3,243
90 Days or greater | Non-PCI Loans | Commercial | Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans24,789 0
90 Days or greater | Non-PCI Loans | Commercial | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans1,595 1,603
90 Days or greater | Non-PCI Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans42,348 42,016
90 Days or greater | Non-PCI Loans | Consumer | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans652 330
90 Days or greater | Non-PCI Loans | Consumer | Consumer other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans1,516 1,505
90 Days or greater | PCD Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans $ 33,694 $ 31,026

Loans and Leases - Schedule of

Loans and Leases - Schedule of Loans as Collateral (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Federal Home Loan Bank of Atlanta
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lendable collateral value of pledged non-PCD loans-FHLB $ 8,847,178 $ 8,637,844
Less: Advances648,671 652,675
Available borrowing capacity8,198,507 7,985,169
Loans pledged as collateral12,327,626 12,157,153
Federal Reserve Bank
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lendable collateral value of pledged non-PCD loans-FRB3,367,466 3,321,762
Less: Advances0 0
Available borrowing capacity3,367,466 3,321,762
Loans pledged as collateral $ 4,181,520 $ 4,104,866

Allowance for Credit Losses (Su

Allowance for Credit Losses (Summary of Activity In Allowance for Loan and Lease Losses) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Forecast period (years)2 years
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance $ 224,314 $ 225,141
Provision (credit)(10,974)28,355
Initial allowance on PCD loans1,193
Charge-offs(8,563)(14,261)
Recoveries5,874 6,755
Ending balance210,651 209,259
Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance(37,924)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance187,217
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance80,842 142,369
Provision (credit)(3,922)21,537
Initial allowance on PCD loans0
Charge-offs(3,331)(5,369)
Recoveries1,275 1,427
Ending balance74,864 72,410
Commercial | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance(87,554)
Commercial | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance54,815
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance119,485 75,236
Provision (credit)(5,504)9,406
Initial allowance on PCD loans0
Charge-offs(4,469)(7,769)
Recoveries3,340 2,431
Ending balance112,852 109,933
Consumer | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance30,629
Consumer | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance105,865
Unfunded Loan Commitment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance12,814 1,055
Provision (credit)(1,243)572
Ending balance11,571 10,512
Unfunded Loan Commitment | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance0 8,885
Unfunded Loan Commitment | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance12,814 9,940
PCD Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance23,987 7,536
Provision (credit)(1,548)(2,588)
Initial allowance on PCD loans1,193
Charge-offs(763)(1,123)
Recoveries1,259 2,897
Ending balance $ 22,935 26,916
PCD Loans | Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance19,001
PCD Loans | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance $ 26,537

Allowance for Credit Losses (Co

Allowance for Credit Losses (Collateral Dependent Loans) (Details) - USD ($)Mar. 31, 2021Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Threshold balance for collateral-dependent loans to be individually reviewed for impairment $ 500,000
Collateral-Dependant Loans64,566,000 $ 58,825,000
Net Realizable Value of Collateral $ 94,459,000 $ 81,272,000
Collateral Coverage146.30%138.20%
Allowance for Credit Losses $ 120,000 $ 131,000
Collateral-dependent nonaccrual loans with no allowance61,700,000 57,500,000
Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans21,517,000 16,772,000
Net Realizable Value of Collateral $ 30,440,000 $ 23,625,000
Collateral Coverage141.50%140.90%
Allowance for Credit Losses $ 0 $ 0
Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans22,688,000
Net Realizable Value of Collateral $ 29,003,000
Collateral Coverage127.80%
Allowance for Credit Losses $ 120,000
PCD Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans20,361,000 19,042,000
Net Realizable Value of Collateral $ 35,016,000 $ 27,872,000
Collateral Coverage172.00%146.40%
Allowance for Credit Losses $ 0 $ 0
Construction and land development | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans1,424,000 1,424,000
Net Realizable Value of Collateral $ 1,795,000 $ 1,795,000
Collateral Coverage126.10%126.10%
Allowance for Credit Losses $ 0 $ 0
Owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans11,886,000 9,792,000
Net Realizable Value of Collateral $ 16,417,000 $ 14,253,000
Collateral Coverage138.10%145.60%
Allowance for Credit Losses $ 0 $ 0
Non-owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans6,951,000 5,556,000
Net Realizable Value of Collateral $ 9,312,000 $ 7,577,000
Collateral Coverage134.00%136.40%
Allowance for Credit Losses $ 0 $ 0
Commercial and industrial | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans1,256,000
Net Realizable Value of Collateral $ 2,916,000
Collateral Coverage232.20%
Allowance for Credit Losses $ 0
Residential mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans21,303,000 23,011,000
Net Realizable Value of Collateral $ 27,279,000 $ 29,775,000
Collateral Coverage128.10%129.40%
Allowance for Credit Losses $ 120,000 $ 131,000
Revolving mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans1,385,000
Net Realizable Value of Collateral $ 1,724,000
Collateral Coverage124.50%
Allowance for Credit Losses $ 0

Allowance for Credit Losses (Tr

Allowance for Credit Losses (Troubled Debt Restructuring) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring $ 216,946 $ 208,180
Nonaccruing194,534 191,483
Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring160,551 157,364
Nonaccruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing56,395 50,816
Non-PCD Loans | Commercial | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring570 632
Non-PCD Loans | Commercial | Owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring48,955 48,463
Non-PCD Loans | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring21,876 19,985
Non-PCD Loans | Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring37,507 32,659
Non-PCD Loans | Commercial | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring108,908 101,739
Non-PCD Loans | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring77,609 81,478
Non-PCD Loans | Consumer | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring1,510 1,582
Non-PCD Loans | Consumer | Consumer auto
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring2,841 2,714
Non-PCD Loans | Consumer | Mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring46,125 48,838
Non-PCD Loans | Consumer | Revolving mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring26,060 27,252
Non-PCD Loans | Consumer | Consumer and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring1,073 1,092
Non-PCD Loans | Accruing | Commercial | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring529 578
Non-PCD Loans | Accruing | Commercial | Owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring38,969 37,574
Non-PCD Loans | Accruing | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring20,541 18,336
Non-PCD Loans | Accruing | Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring30,956 29,131
Non-PCD Loans | Accruing | Commercial | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring90,995 85,619
Non-PCD Loans | Accruing | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring48,636 54,128
Non-PCD Loans | Accruing | Consumer | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring1,501 1,573
Non-PCD Loans | Accruing | Consumer | Consumer auto
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring2,173 2,018
Non-PCD Loans | Accruing | Consumer | Mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring25,323 29,458
Non-PCD Loans | Accruing | Consumer | Revolving mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring18,729 20,124
Non-PCD Loans | Accruing | Consumer | Consumer and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring910 955
Non-PCD Loans | Nonaccruing | Commercial | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing41 54
Non-PCD Loans | Nonaccruing | Commercial | Owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing9,986 10,889
Non-PCD Loans | Nonaccruing | Commercial | Non-owner occupied commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing1,335 1,649
Non-PCD Loans | Nonaccruing | Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing6,551 3,528
Non-PCD Loans | Nonaccruing | Commercial | Total commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing17,913 16,120
Non-PCD Loans | Nonaccruing | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing28,973 27,350
Non-PCD Loans | Nonaccruing | Consumer | Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing9 9
Non-PCD Loans | Nonaccruing | Consumer | Consumer auto
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing668 696
Non-PCD Loans | Nonaccruing | Consumer | Mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing20,802 19,380
Non-PCD Loans | Nonaccruing | Consumer | Revolving mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing7,331 7,128
Non-PCD Loans | Nonaccruing | Consumer | Consumer and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing163 137
PCD Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring30,429 24,963
PCD Loans | Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructuring20,920 17,617
PCD Loans | Nonaccruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Nonaccruing $ 9,509 $ 7,346

Allowance for Credit Losses (No

Allowance for Credit Losses (Note Restructurings During Period) (Details) $ in Thousands3 Months Ended
Mar. 31, 2021USD ($)loansMar. 31, 2020USD ($)loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans129 172
Recorded investment at period end | $ $ 23,032 $ 17,977
Number of Loans | loans46 60
Recorded investment at period end | $ $ 5,584 $ 3,451
Interest only period provided
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans6 10
Recorded investment at period end | $ $ 6,947 $ 3,986
Number of Loans | loans2 0
Recorded investment at period end | $ $ 42 $ 0
Loan term extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans25 6
Recorded investment at period end | $ $ 3,863 $ 794
Number of Loans | loans12 3
Recorded investment at period end | $ $ 1,749 $ 263
Below market interest rate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans53 88
Recorded investment at period end | $ $ 8,122 $ 8,165
Number of Loans | loans20 29
Recorded investment at period end | $ $ 1,428 $ 1,421
Discharged from bankruptcy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loans45 68
Recorded investment at period end | $ $ 4,100 $ 5,032
Number of Loans | loans12 28
Recorded investment at period end | $ $ 2,365 $ 1,767

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020Dec. 31, 2020
Real Estate Properties [Line Items]
Mortgage Loans in Process of Foreclosure, Amount $ 27,100 $ 29,400
Gains (losses) on sales of OREO(1,800) $ 100
Other Real Estate [Roll Forward]
Beginning balance50,890 46,591
Additions7,106 5,987
Sales(8,102)(5,321)
Write-downs/losses(1,382)(1,363)
Ending balance48,512 55,707
Mortgage
Other Real Estate [Roll Forward]
Beginning balance5,800
Ending balance $ 6,500
2019 Acquisitions
Other Real Estate [Roll Forward]
Additions $ 9,813

Mortgage Servicing Rights (MSR

Mortgage Servicing Rights (MSR Carrying Value) (Details) - USD ($)3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Beginning balance $ 18,426,000 $ 22,963,000
Servicing rights originated3,444,000 1,583,000
Amortization(2,248,000)(1,823,000)
Valuation allowance decrease (increase)3,123,000 (2,967,000)
Ending balance $ 22,745,000 $ 19,756,000

Mortgage Servicing Rights (Valu

Mortgage Servicing Rights (Valuation allowance) (Details) - USD ($)3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Beginning balance $ 4,365,000 $ 222,000
Valuation allowance increase(3,123,000)2,967,000
Ending balance $ 1,242,000 $ 3,189,000

Mortgage Servicing Rights (Econ

Mortgage Servicing Rights (Economic Assumptions) (Details) - USD ($)3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Servicing Asset Key Economic Assumptions [Line Items]
Weighted average constant prepayment rate16.54%20.62%
Weighted average cost to service a loan $ 87.58 $ 87.58
Fixed Rate Residential Mortgage
Servicing Asset Key Economic Assumptions [Line Items]
Discount rate8.74%7.92%
Discount rate, basis spread on Treasury rate700.00%
All Loans and Leases, Excluding Conventional Fixed Loans
Servicing Asset Key Economic Assumptions [Line Items]
Discount rate9.74%8.92%
Discount rate, basis spread on Treasury rate800.00%

Mortgage Servicing Rights (Narr

Mortgage Servicing Rights (Narrative) (Details) - USD ($)3 Months Ended
Mar. 31, 2021Mar. 31, 2020Dec. 31, 2020
Mortgage Servicing Rights [Abstract]
Residential Mortgage Loans Serviced $ 3,300,000,000 $ 3,300,000,000
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset2,100,000 $ 2,100,000
Valuation allowance increase $ (3,123,000) $ 2,967,000

Repurchase Agreements (Details)

Repurchase Agreements (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral $ 685,600
Securities sold under customer repurchase agreements680,705 $ 641,487
Available-for-sale Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral689,300
Overnight and continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under customer repurchase agreements680,700 641,500
Overnight and continuous | US Government Agencies Debt Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under customer repurchase agreements485,800 432,800
Overnight and continuous | Commercial Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under customer repurchase agreements $ 194,900 $ 208,700

FDIC Shared-Loss Payable (Narra

FDIC Shared-Loss Payable (Narrative) (Details) $ in Thousands3 Months Ended
Mar. 31, 2021USD ($)
FDIC Shared-Loss Receivable [Abstract]
Payment made to the FDIC to settle shared-loss agreement $ 16,103

FDIC Shared-Loss Payable FDIC S

FDIC Shared-Loss Payable FDIC Shared-Loss Payable (Changes in Payable to FDIC) (Details) $ in Thousands3 Months Ended
Mar. 31, 2021USD ($)
FDIC Shared-Payable [Abstract]
FDIC shared-loss payable $ 15,601
Accretion502
Payment made to the FDIC to settle shared-loss agreement(16,103)
FDIC shared-loss payable $ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss), before Tax $ (43,728) $ 15,926
Deferred tax expense (benefit)(10,057)3,663
Accumulated other comprehensive income (loss), net of tax(33,671)12,263
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax2,428 $ 10,419
Unrealized Losses on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss), before Tax36,570 102,278
Deferred tax expense (benefit)8,411 23,524
Accumulated other comprehensive income (loss), net of tax28,159 78,754
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax7,089 15,242
Unrealized Losses On Securities Available For Sale Transferred To Held To Maturity
Accumulated Other Comprehensive Income (Loss), before Tax4,924 5,399
Deferred tax expense (benefit)1,133 1,242
Accumulated other comprehensive income (loss), net of tax3,791 4,157
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax366 0
Funded Status of Defined Benefit Plan
Accumulated Other Comprehensive Income (Loss), before Tax(85,222)(91,751)
Deferred tax expense (benefit)(19,601)(21,103)
Accumulated other comprehensive income (loss), net of tax(65,621) $ (70,648)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax(5,027)(4,823)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax $ 6,529 $ 6,264

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) (Components of AOCI) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income $ (2,428) $ (10,419)
Net current period other comprehensive (loss) income(45,934)101,111
Unrealized Losses on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance78,754
Net unrealized losses arising during period(43,506)111,530
Amounts reclassified from accumulated other comprehensive income(7,089)(15,242)
Net current period other comprehensive (loss) income(50,595)96,288
Ending balance28,159 102,080
Unrealized Losses On Securities Available For Sale Transferred To Held To Maturity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance4,157
Net unrealized losses arising during period0 0
Amounts reclassified from accumulated other comprehensive income(366)0
Net current period other comprehensive (loss) income(366)0
Ending balance3,791 0
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance(70,648)
Net unrealized losses arising during period0 0
Amounts reclassified from accumulated other comprehensive income5,027 4,823
Net current period other comprehensive (loss) income5,027 4,823
Ending balance(65,621)(127,692)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance12,263
Net unrealized losses arising during period(43,506)111,530
Amounts reclassified from accumulated other comprehensive income(2,428)(10,419)
Net current period other comprehensive (loss) income(45,934)101,111
Ending balance $ (33,671)(25,612)
Previously Reported | Unrealized Losses on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance5,792
Previously Reported | Unrealized Losses On Securities Available For Sale Transferred To Held To Maturity
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance0
Previously Reported | Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance(132,515)
Previously Reported | Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance $ (126,723)

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax $ 9,207 $ 19,795
Amounts reclassified from accumulated other comprehensive income, net of tax(2,428)(10,419)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax1,502 1,441
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax(5,027)(4,823)
Tax effect2,118 4,553
Unrealized Losses on Investment Securities Available for Sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax9,207 19,795
Amounts reclassified from accumulated other comprehensive income, net of tax(7,089)(15,242)
Tax effect2,118 4,553
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax7,089 15,242
Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before taxes(6,529)(6,264)
Amounts reclassified from accumulated other comprehensive income, net of tax5,027 4,823
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax1,502 1,441
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax(5,027)(4,823)
Unrealized Losses On Securities Available For Sale Transferred To Held To Maturity
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income, net of tax(366) $ 0
Other Comprehensive Income (Loss) Reclassification Adjustment Of Unrealized Losses From AOCI For Securities Available For Sale Transferred To Held To Maturity Before Tax475
Other Comprehensive Income (Loss) Reclassification Adjustment Of Unrealized Losses From AOCI For Securities Available For Sale Transferred To Held To Maturity Tax(109)
Other Comprehensive Income (Loss) Reclassification Adjustment Of Unrealized Losses From AOCI For Securities Available For Sale Transferred To Held To Maturity Net Of Tax $ 366

Estimated Fair Values (Estimate

Estimated Fair Values (Estimated Fair Values For Certain Financial Assets And Financial Liabilities) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks $ 410,495 $ 362,048
Overnight investments7,588,757 4,347,336
Debt Securities, Available-for-sale7,307,122 7,014,243
Investment securities held to maturity at cost2,808,099 2,816,982
Investment in marketable equity securities106,886 91,680
Loans held for sale129,300 124,800
Loans and Leases Receivable, Net Amount32,970,200 32,567,661
Income earned not collected148,022 145,694
Stock issued by Federal Home Loan Bank40,600 45,400
Deposits47,330,997 43,431,609
Securities sold under customer repurchase agreements680,705 641,487
FDIC shared-loss payable0 15,601
Subordinated Debt497,153 504,518
Other Borrowings84,502 88,470
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Federal Home Loan Bank Advances648,671 655,175
Cash and due from banks410,495 362,048
Overnight investments7,588,757 4,347,336
Debt Securities, Available-for-sale7,307,122 7,014,243
Investment securities held to maturity at cost2,808,099 2,816,982
Investment in marketable equity securities106,886 91,680
Loans held for sale129,334 124,837
Loans and Leases Receivable, Net Amount32,970,200 32,567,661
Income earned not collected148,022 145,694
Stock issued by Federal Home Loan Bank40,563 45,392
Mortgage servicing rights23,728 19,628
Deposits44,601,552 40,542,596
Time deposits2,729,445 2,889,013
Securities sold under customer repurchase agreements680,705 641,487
FDIC shared-loss payable0 15,601
Accrued interest payable5,149 9,414
Subordinated Debt497,153 504,518
Other Borrowings84,502 88,470
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Federal Home Loan Bank Advances664,996 677,579
Cash and due from banks410,495 362,048
Overnight investments7,588,757 4,347,336
Debt Securities, Available-for-sale7,307,122 7,014,243
Investment securities held to maturity at cost2,774,982 2,838,499
Investment in marketable equity securities106,886 91,680
Loans held for sale129,334 124,837
Loans and Leases Receivable, Net Amount33,202,437 33,298,166
Income earned not collected148,022 145,694
Stock issued by Federal Home Loan Bank40,563 45,392
Mortgage servicing rights24,322 20,283
Deposits44,601,552 40,542,596
Time deposits2,738,244 2,905,577
Securities sold under customer repurchase agreements680,705 641,487
FDIC shared-loss payable0 15,843
Accrued interest payable5,149 9,414
Subordinated Debt517,091 525,610
Other Borrowings $ 85,067 $ 89,263

Estimated Fair Values (Assets A

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Recurring Basis) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale $ 7,307,122 $ 7,014,243
Investment securities available for sale7,307,122 7,014,243
Investment in marketable equity securities106,886 91,680
Loans held for sale129,334 124,837
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale7,307,122
Investment securities available for sale7,014,243
Loans held for sale129,334 124,837
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale0 0
Loans held for sale0 0
Fair Value, Measurements, Recurring | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale6,989,006
Investment securities available for sale6,697,619
Loans held for sale129,334 124,837
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale318,116 316,624
Loans held for sale0 0
Fair Value, Measurements, Recurring | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale499,933
Fair Value, Measurements, Recurring | U.S. Treasury | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale0
Fair Value, Measurements, Recurring | U.S. Treasury | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale499,933
Fair Value, Measurements, Recurring | U.S. Treasury | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale0
Fair Value, Measurements, Recurring | Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale846,686
Investment securities available for sale701,391
Fair Value, Measurements, Recurring | Agency Securities | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Agency Securities | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale846,686
Investment securities available for sale701,391
Fair Value, Measurements, Recurring | Agency Securities | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Commercial Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale1,098,987
Investment securities available for sale771,537
Fair Value, Measurements, Recurring | Commercial Mortgage Backed Securities | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Commercial Mortgage Backed Securities | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale1,098,987
Investment securities available for sale771,537
Fair Value, Measurements, Recurring | Commercial Mortgage Backed Securities | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Residential Mortgage Backed Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale4,758,589
Investment securities available for sale4,438,103
Fair Value, Measurements, Recurring | Residential Mortgage Backed Securities | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Residential Mortgage Backed Securities | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale4,758,589
Investment securities available for sale4,438,103
Fair Value, Measurements, Recurring | Residential Mortgage Backed Securities | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Equity Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in marketable equity securities106,886 91,680
Fair Value, Measurements, Recurring | Equity Securities | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in marketable equity securities43,677 32,855
Fair Value, Measurements, Recurring | Equity Securities | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in marketable equity securities63,209 58,825
Fair Value, Measurements, Recurring | Equity Securities | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in marketable equity securities0 0
Fair Value, Measurements, Recurring | Corporate Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale602,860
Investment securities available for sale603,279
Fair Value, Measurements, Recurring | Corporate Bonds | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale0
Investment securities available for sale0
Fair Value, Measurements, Recurring | Corporate Bonds | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale284,744
Investment securities available for sale286,655
Fair Value, Measurements, Recurring | Corporate Bonds | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale $ 318,116
Investment securities available for sale $ 316,624

Estimated Fair Values (Assets_2

Estimated Fair Values (Assets and Liabilities Carried at Fair Value on a Recurring Basis Significant Unobservable Inputs) (Details) - USD ($)3 Months Ended
Mar. 31, 2021Mar. 31, 2020Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3 $ 0 $ 1,800,000
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment securities available for sale7,307,122,000 $ 7,014,243,000
Corporate Bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance316,624,000 69,685,000
Amounts included in net income2,333,000 (4,366,000)
Unrealized net (losses) gains included in other comprehensive income(91,000)(85,000)
Transfers in0 1,782,000
Sales / Calls750,000 0
Ending balance318,116,000 $ 67,016,000
Fair Value, Measurements, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment securities available for sale7,014,243,000
Fair Value, Measurements, Recurring | Corporate Bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment securities available for sale603,279,000
Significant Unobservable Inputs (Level 3 Inputs) | Fair Value, Measurements, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment securities available for sale $ 318,116,000 316,624,000
Significant Unobservable Inputs (Level 3 Inputs) | Fair Value, Measurements, Recurring | Corporate Bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment securities available for sale $ 316,624,000

Estimated Fair Values (Assets_3

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020Mar. 31, 2020Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate remeasured during current year $ 48,512 $ 50,890 $ 55,707 $ 46,591
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans10,247 11,779
Other real estate remeasured during current year36,642 40,115
Mortgage servicing rights20,409 16,966
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans0 0
Other real estate remeasured during current year0 0
Mortgage servicing rights0 0
Fair Value, Measurements, Nonrecurring | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans0 0
Other real estate remeasured during current year0 0
Mortgage servicing rights0 0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans10,247 11,779
Other real estate remeasured during current year36,642 40,115
Mortgage servicing rights $ 20,409 $ 16,966

Estimated Fair Values (Fair Val

Estimated Fair Values (Fair Value Option) (Details) - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020Dec. 31, 2020
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) from fair value changes on originated loans held for sale $ (2,700) $ 1,200
Loans Held For Sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value of originated loans held for sale129,334 $ 124,837
Aggregate unpaid principle balance of originated loans held for sale126,113 118,902
Difference between fair value and aggregate unpaid principle balance of originated loans held for sale $ 3,221 $ 5,935

Estimated Fair Values (Narrativ

Estimated Fair Values (Narrative) (Details)3 Months Ended
Mar. 31, 2021USD ($)Mar. 31, 2020USD ($)Dec. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers from level 2 to level 3 $ 0 $ 1,800,000
Gains (Losses) from fair value changes on originated loans held for sale(2,700,000) $ 1,200,000
Originated loans held for sale, 90 days or more past due0 $ 0
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability measured at fair value on nonrecurring basis $ 0 $ 0
Discount Rate | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input0.06
OREO, measurement input0.06
Discount Rate | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input0.10
OREO, measurement input0.15
Discount Rate | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held-for-sale, measurement input0.0681
OREO, measurement input0.0876

Employee Benefit Plans (Compone

Employee Benefit Plans (Components Of Pension Expense) (Details) - BancShares Plan - USD ($) $ in Thousands3 Months Ended
Mar. 31, 2021Mar. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost $ 3,653 $ 3,457
Interest cost7,404 8,531
Expected return on assets(19,595)(16,409)
Amortization of net actuarial loss6,529 6,264
Total pension expense $ (2,009) $ 1,843

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) $ in Millions3 Months Ended
Mar. 31, 2021USD ($)
BancShares Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 0

Leases (Operating and Finance L

Leases (Operating and Finance Lease Assets and Liabilities) (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Leases [Abstract]
Asset, operating $ 65,330 $ 68,048
Asset, finance5,936 6,478
Total leased assets71,266 74,526
Present value of lease liabilities65,841 68,343
Present value of lease liabilities5,915 6,308
Total lease liabilities $ 71,756 $ 74,651

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in ThousandsMar. 31, 2021Dec. 31, 2020
Standby Letters of Credit
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted $ 162,400 $ 163,900
Qualified Affordable Housing Project Investments, Commitment139,572 129,819
Commitments to Extend Credit
Guarantor Obligations [Line Items]
Unused Commitments to Extend Credit12,126,186 12,098,417
Qualified Affordable Housing Project Investments $ 49,700 $ 53,700